Wow, this probably the best news I've read since coming into the Vita thread for quite some time!
Gravity Rush was one of the 3 or so games I am DEFINITELY picking up when I get my Vita in December (the other two being LBP & WipEout), so hearing news of a sequel is really promising.
Also P4G finally getting a European release. I know I could've just imported it from the US, but as MikeRox pointed out, I'd rather show my support for bringing those types of games over to Europe.
So yeah. Good news day!