These are pretty much the same rumours from "trusted sources" that got posted around before Logic 9 came out - i.e. just people thinking / wishing out loud. Some might happen, some not.

It's very rare for Logic info to leak. The only leak I've ever known of was just before Logic 9. A European podcast went out where one of the participants said something like "Logic 9 is coming out next Tuesday"... and it did.

I would be very surprised if they removed the instruments. But the lack of any extra development / fixes on the instruments for quite a while leaves me hopeful that some of them are being re-vamped (whilst remaining backwards-compatible, of course).

There are loads of people who use the bundled sound libraries, so it's a selling point. I would again be very surprised if these were no longer included.

Making it available in the App Store (perhaps as a bare bones version) is a no-brainer. But I hope there will be a boxed version too, since I have a super slow internet connection.