I think they are removing the OLED screen to make it cheaper. Sony is really into getting people to adopt the Vita for use with the PS4, and one way they are doing it is by offering cheaper and cheaper Vitas.
I won't get rid of my AC special edition white Vita now because I too love the OLED screen.
Also been playing Dragon's Crown. It's something to do between customers, but it's not fantastic or anything. My biggest bitch about the Vita is still the lack of quality titles. Uncharted was awesome, Sly Cooper was really good, but I haven't really seen anything since that made me really want it. I've been playing th ebeta of Killzone Mercs and it's really "meh."
Origin - JStarX7 STEAM - Agent.X7 PSN - JStar_X7 Xbox Live - Agent X7