Sony makes the Playstation Vita.
Mainly plastic
No, the PSVita is a much more advanced console. Games made for PSVita are not compatible with a PSP.
No, it takes its own PSVita game cards. It is not compatible with PSP UMDs, but an increasing number of PSP games are being made available on the PSVita's PSN store.
The PSVita is not region locked, a US PSVita can play an EU PSVita game as would be bought in the UK.
Yes, the PSVita has physical games, small cartridges called PSVita Game Cards. The PSVita has a slot at the top for them.
No, at this moment in time, is it not available for PSVita.
Yes, the PSVita's screen is HD.
Sony hasn't stopped making the PSVita.
No way - psvita is the best, in my opinion.
Yes, the PSVita was released on the 17th of December, 2011.
The PSVita's predecessor was the third generation PSP, PSP-3000.
Yes, the Youtube app for PSVita is free.