To make this thread relevant to apps since it's totally in the wrong forum...
Surface Pro 2 will be able to run more apps faster due to increased memory and faster CPU. There.
Also, there are multiple threads in the news, general, and pro subforums about Pro 2.
And no, I highly doubt you can install the new kickstand to old units. Ultramobile engineering has very tight hardware specifications, so if something is a micron off, it probably won't fit. Besides, you'd have to buy a Pro 2 (or RT v2) and destroy it to get the new kickstand, so what was the point again?