1) A 1600x900 IPS display, which means the iPad will be able to show widescreen TV shows at true full-screen resolution, especially 720p HDTV.
Well, thats like predicting higher monitor solutions back in 1987, when 320x200 was common.
Sure, we will have higher resolution screens sooner or later.
2) Increases in storage capacity as the price of solid-state memory storage comes down. Don't be surprised that we get as much as 256 GB of solid-state storage within two years, very necessary if you're going to store 720p HDTV movies downloaded through the iTunes Store.
Oh boy, within two years, apple will probably ship the 20TB TimeCapsule.
But we don't know if there will be SSD anymore or anything else, but much faster. A 256GB SDD costs today like, what, $600? And it has the size of a 2.5" HDD. Great, but even if i agree to that trend, i don't see 1" drives with 256GB within 4 years.
3) Mini DisplayPort out with optional Mini DisplayPort to HDMI adapter.
I dont see that one - never. It is rather fixed to some technology and consumes a lot of space for the outlet and does cost money. I would love to see someone produce an HDMI-connector for the 30Pin dock. They could if there is a VGA-connector for it, no?
4) IR port. Apple should have included the IR port because it would have made it potentially the ultimate home theater system remote control.
I do fully agree, because you could put the iPad on its stand and control it with an apple remote (or use it as one).
5) True multitasking, something that could be implemented with the iPhone OS version 4.0 that may be unveiled at WWDC in June 2010.
That rumor never dies. In fact the OS does allow multitasking and without it would not be possible to listen to your music while browsing the web or watching photos or reading emails. However, there is no public(ly known) API that would allow to send a process to background, so no developer could use multitasking except Apple. The reason is probably just simple protection for the user. Allowing a developer to send a process to background means allowing a malicious software to log input, to read email, contact lists whenever the user interacts with those applications.
You as the user will never notice nor be able to tell maybe except from that fact that your battery goes down a bit quicker. When you start an application, fine, but to leave an application you'd press the home button, to wich the app would disappear, but you could never be certain that it quit and does not continue to spy on you.
And that reasoning makes a lot of sense to me as the review process for the app store does not include code review and hence could not find code that would behave that way.
With Multitasking to everyone whether the IPhone nor the IPad could ever be used in a situation, where someone is at least remotely concerned about security.
Having that block in place and allowing WPA2 encryption of WLAN connections makes IPad a fit for companies and the above mentioned doctors.