I thought it was pretty impressive. The games will come - 8GB of GDDR5 was all I needed to be convinced.
Rockstar is a fairly glaring absence at the end of this document, although I suppose they could be covered by the mention of Take-Two. Suggests that GTA V really is current gen only, or that the rumours it it being a MS exclusive for next gen might be true? http://www.scei.co.j...f/130221a_e.pdf
(edit: Perhaps not. I didn't realise that Rockstar are owned outright by Take-Two.)