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Apple today seeded the third beta of an upcoming macOS Sierra 10.12.5 update to developers, one week after seeding the second beta and three weeks after releasing macOS Sierra 10.12.4, which introduced Night Shift for the Mac.

The third beta of macOS Sierra 10.12.5 can be downloaded through the Apple Developer Center or through the Software Update mechanism in the Mac App Store.

macOS-10.12.5-beta-800x500.jpg

According to the release notes accompanying the beta, the update "improves the stability, compatibility, and security of your Mac."

Apple's release notes don't often provide a lot of insight into what's included in new beta software, so we don't know what features or bug fixes might be included in the 10.12.5 update.

No notable changes or major bug fixes were discovered in the first two betas, but should anything pop up in the third macOS Sierra 10.12.5 beta, we'll update this post.

Update: Beta 3 is also out for public beta testers.

Article Link: Apple Seeds Third Beta of macOS Sierra 10.12.5 to Developers and Public Beta Testers
 
"improves the stability, compatibility, and security of your Mac."

This is so generic, why can't they just say what it fixes? We don't need security info notes but other specific info for the user would be good. Time for a change in language?
 
Quick question: Do these beta updates really need to be front page news?

Unless they reveal something incredible (like a hidden new Mac model) they're not really that newsworthy to the vast majority of people.

Quick answer: Yes.

I like to see it on the front page to inform me that the new betas are available.

Sometimes I see other news articles on the front page that are not relevant to me and I just skip them. I don't then complain about their existence merely because they are not relevant to me.
 
Quick question: Do these beta updates really need to be front page news?

Unless they reveal something incredible (like a hidden new Mac model) they're not really that newsworthy to the vast majority of people.
I really don't mind, just as long as they don't do something like putting iOS on the front page and pushing MacOS to the Mac Blog.
 
Quick question: Do these beta updates really need to be front page news?

Unless they reveal something incredible (like a hidden new Mac model) they're not really that newsworthy to the vast majority of people.

Well, there are not many news from Apple worthy of anything, so why not to put it on the front page since there is nothing else to talk about.
 
I like to see it on the front page to inform me that the new betas are available.

Wouldn't you see them pop-up as an update on the App Store, yes?

I really don't mind, just as long as they don't do something like putting iOS on the front page and pushing MacOS to the Mac Blog.
I'm not disagreeing with you there. But neither Mac, iOS, tvOS, or watchOS beta updates should be front page news. It should only be front page when the point-upgrade is finished & released to the masses. Otherwise, it's wasted bits.
 
Wouldn't you see them pop-up as an update on the App Store, yes?

But I tend to look at tech news sites like macrumors more often than the mac app store or apple's developer downloads page. I think the same could be said of most developers too.

Of all the times I first became aware of new betas the vast majority were via tech news sites like macrumors.

Of course that same information is available via the mac app store and apple's developer downloads page, but it probably would take more time before I became aware of it that way as I don't look at those quite as aften as tech news sites.
 
Quick question: Do these beta updates really need to be front page news?

Unless they reveal something incredible (like a hidden new Mac model) they're not really that newsworthy to the vast majority of people.

I was more bothered by the removal of TouchID rumor story on front page than this...
 
Quick question: Do these beta updates really need to be front page news?

Unless they reveal something incredible (like a hidden new Mac model) they're not really that newsworthy to the vast majority of people.
I truly believe the front page must have a good number of Mac-related news, because it's important that Apple realizes that there's a number of customers who really care of the Mac as their primary Apple product. So, yes, I believe MacOS updates news should be on the front page.
 
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What I personally REALLY want to know is whether this update will finally fix all the problems with PDFs. That is the one thing holding me back from updating to Sierra and until I hear conclusively that PDFKit is up to standard I'm not taking the jump. So PLEASE pay more attention to this issue.
 
What I personally REALLY want to know is whether this update will finally fix all the problems with PDFs. That is the one thing holding me back from updating to Sierra and until I hear conclusively that PDFKit is up to standard I'm not taking the jump. So PLEASE pay more attention to this issue.
I'm also in this boat, having enough "business class" "Pro" clients that work daily with PDF workflows. I sent a message to Jason Snell, et al, after the 10.12.4 release, to see if that crowd had done any further testing since their Feb article more-publically exposing the PDFKit problems, but the response was "no update yet" (mostly because no one has done all the follow-up testing to confirm). Given the public outing on this, I'd have liked to have seen Apple more publicly acknowledge the problem and more directly admit status. I had been dealing with these kinds of weird PDF issues as far back as 10.10, and it has been infuriating. Breaking stuff that worked great isn't, IMHO, a good move for Apple, especially so when the ONLY reason is "so macOS can be like iOS". And eating user data in PDFs can have some pretty problematic consequences (legal contracts, health care/tax forms, etc) for unsuspecting users.
 
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Quick question: Do these beta updates really need to be front page news?

Unless they reveal something incredible (like a hidden new Mac model) they're not really that newsworthy to the vast majority of people.
If they weren't there the front page may be BLANK!
 
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Safari has been very buggy, pics and links sometimes don't appear at all, even with all extensions turned off.
 
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"improves the stability, compatibility, and security of your Mac."

This is so generic, why can't they just say what it fixes? We don't need security info notes but other specific info for the user would be good. Time for a change in language?

Probably because they don't fix anything fully. Just make a partial progress on some of the bugs and finally fix them in a new version of OS.
 
Killed my internet connection. Could connect to WiFi network but no internet. Rebooted a few times with no luck. Finally tried resetting NVRAM and now I'm back up and running.

Also just noticed Messages no longer sending or receiving. iPhone contact names show highlighted in pink. Tries to send via SMS but ultimately fails. Messages are received on my iPhone but not longer on my MacBook Pro after update to (16F60a).

UPDATE: Played around a bit and found that the update signed me out of my iMessage account. Signed back in and now all good!:)
 
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Since this latest beta I'm having issues with LinkedIn. Sometimes I can't log in (from here https://www.linkedin.com) but if I use another screen to log in (https://www.linkedin.com/uas/login) then although it does log me in, any attempts to update my profile end up with a password prompt and then " Sorry, something went wrong - please try again later.". I've deleted all cookies and cache, same issue.

It all works fine in Firefox; seems like a cookie issue (of course, it could be a problem with LinkedIn's Safari handling but it was working fine in Safari before this latest beta).
 
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