I expect alot of pokémon, alot of kirby, and sadly alot of mario....(I think they are over-using him)
Also alot of japanese nonsense that we will never see in the west (weird miniskirt cartoon teenagers fighting giant tentacules in robots suits while singing karaoke or something simmilar that japaneses like)
Also since completly ignoring animal crossing at e3 made alot of ppl rly angry, expect some animal crossing in there.
Finaly, HOPEFULLY we will FINALY see a major nintendo game on 3ds that doesnt involve mario in any way. (seriously, its about time, with paper mario and nsmb2 there will be a total of 5 mario games on the system, 6 if you include mario and sonic at olympic games + you could arguably include luigi's mansion since its pretty much mario-related. 7 mario-related games will be on the system meanwhile there is 0 original zelda game, 0 metroid game, 0 donkey kong game, 0 original star fox game, 0 f zero game, 0 kirby game. Srsly nintendo, I know you love mario and all, but you have other franchises... I think if I hear of 1 more mario game announced for 3ds before I hear about a zelda, donkey kong, metroid or any other franchises I mentioned I will throw my 3ds to the ground.)
What?! I can't hear you over all this awsome! - Pyrrhon (Kid Icarus:Uprising)
Final Ultimate Legendary Earth Power Super Max Justice Future Miracle Dream Beautiful Galaxy Big Bang Little Bang Sunrise Starlight Infinite Fabulous Totally Final Wonderful Arrow...FIRE! - Wonder-Red (The Wonderful101)