The US media briefings rarely reveal any new titles...and unless the games are due within 6 months..they'll save the reveals until E3.
Anyone expecting a vast amount of new announcements is deluded IMO.
At most I'm expecting new trailers for already announced games (Metroid Other M, Galaxy 2...but not Zelda), maybe a new Nintendo channel (a euro/US version of "Wii No Ma" perhaps?)...and maybe a reveal of one new title (and that's a big maybe).
If you get that much you'll be damn lucky. Don't fall for websites/blogs hyping it...they are likely just trying to attract clicks.