There hasn't been much revealed in the way of Move titles. There's no indication of when they will stop producing or supporting older consoles. If last console cycle is any indication, the PS2 was discontinued LONG after the launch of the PS3, so expect to see the last generation hang around for a few more years.
Both consoles are not backwards compatible for a lot of reasons that make sense. The first is mostly because they use a different hardware architecture (most notably the processor) than the previous consoles, which means they would have to drive up the cost of the console to add software or hardware emulation for the previous generation hardware. The benefit to this change of hardware is that they're more like PCs now, so that porting games back and forth between console and desktop PCs will be a lot more seamless.
This is also why Sony is moving to the online streaming of PS3 games at a later date, so that you get pseudo backwards compatibility for those that wish to part with their PS3s. The PS3 isn't BC with PS2 games (minus the launch models) either, so this is really nothing new from either console manufacturer. They're trying to encourage you to keep your older systems if you want to play previous generation games, especially because they are still going to launch games on previous gen consoles.
Not sure if it will offer full 7.1 sound, but given it's large range of video support, it's probably a safe assumption. Also, yes, they mentioned that games are only in 1080p and 1080p 3D, but the console can play 4K blu-rays and 1030p3D movies.
P.S. Punctuation is your friend. Not trying to be a grammar nazi, it's just genuinely hard to see where one question ends and the next begins without it.
Facebook
Twitter
Instagram