Nintendo's E3... Ok, well... E3 isn't as big as it used to be, but still! I'm going te stop being conservative in my guesses;
DS:
-Metroid Dread.
-New Super Mario Bros 2.
-New Castlevania game.
-Dragon Quest 9 short showcasing (main showcasing will be at TGS08).
-Pokémon Platinum?!
Wii:
-They need to put some 3rd party games (high-profile) in their show.
Amongst those will be; Fatal Frame 4, Red Steel 2, New Capcom IP (not the one that was recently announced), final fantasy: Chrystal Chronicles and Sonic Unleashed.
-Nintendo will announce that they are working on the next Zelda, a short trailer will be shown (similar to TP announcement back in 2004). The game will be totally different from other Zelda's.
-Pikmin 3 in the works. Coming this year.
-Official Nintendo SD-cards up to 2Gb to solve the capacity problem (these SD-cards can be accesed by the Wii using a firmware-update, also USB-ports open up).
-Kid Icarus in the works. Done by Factor 5 (obviously). Eehrm, spring 2009.
-Red Steel 2; not this year. Handed over to Free Radical.
-Another Free Radical game coming to Wii (not Timesplitters 4, might be inspired on the series though).
-Monster Hunter 3 will be named, progressing rather well. Main showcasing again, on TGS08.
-Upping the output of Wii's in factories.
-Excusing for WiiFit shortages, more should be arriving soon.
-Wii Music!
-Disaster; Day of Crisis trailer and late 08 begin 09 releasdate.
-Something with Resident and Evil in the name coming (not RE5 obviously, but something else). Will run on a finetuned and slightly upgraded RE4-engine. (Totally new game in the series, sort of a spin-off but can be considered a full grown game in the series).
EDIT: Majora's Mask for VC!
THE NETHERLANDS
