I've not seen anything about the memory yet but I have seen reports of the standard 800×480, 3.7 inch screen.
It most definitely has a keyboard with a very interesting opening mechanism. Like the original G1 it kinda flips out but this time it goes up and down instead of out to the side. There is a shot of it mid-opening here
Edit: of course, now they say that the slider was just pulled apart. So maybe it just slides normally and some one broke this one.