Apple silicon is already so good that any updates will be incremental at best. With that being said, they really hit out of the park from the get go. The M1 was a revolution.
Yes it was but with a unpatchable hardware flaw, there is now a new flaw that can be abused using all (no idea about M3 series but I imagine they are included as chip design is locked in so long before production) so in current M (not sure about M3) and all current A series chips, that's not patched. It's hard to exploit though, and if you don't use Safari you are totally safe, so you are kinda stuffed on iPhones and iPads as other browsers are just webkit with a different skin, its been dubbed iLeakage," the exploit targets WebKit, the JavaScript engine that powers Apple's Safari browser, and is reminiscent of the Meltdown and Spectre attacks that hit Intel. A remote attacker could steal secrets such as Gmail inbox data, text messages, password manager-supplied credentials via autofill fields, and other miscellaneous information like watch histories from YouTube.
There is a mitigation but researchers noted this only applies to macOS, isn't enabled by default, and is currently marked as unstable! This is what happens when money comes before a good OS not a bug filled mess and good hardware, not SoC's rushed to production to try and keep the quaterly earnings looking good. Well thats how it feels, and since we dont know about the M3 chips lets hope they dont have these hardware issues, but Apple are not exactly known for being open about security, like Private wifi not working properly for three years, until iOS 17.1 and 14.1 were released. So much for what happens on your iPhone stays on your iPhone.
I would prefer security to be better on these M series chips after Intels fiasco a few years back and better security in Apples operating systems rather than this dash to make cash with meagre updates to keep thier necks ahead of the competion and their income too. The M1 was a great chip but you cant have a M1 every year I know that, but the M3 is not turning out to be the stunning upgrade we thought. Unless you are a niche user who needs a M3 max, so why get a M3 Pro when the M2 Pro is hardly any different in real world useage it seems so far and has more bandwidth? So a M3 Pro mini vs a M2 Pro mini may show hardly any real world gains it seems, that just makes me think Apple is running before it can walk as the competion nips at its heals. And at cost to consumers, I mean 8gb of ram, and I dont care if its called unified memory should not cost that much nor should its SSD's, and 8GB as Apples baseline for thier computers when the iPhone comes with that, on these machines is shameful and seems solely to nudge people to upgrade at rediculous prices.