Well looking through the release list for the rest of 2008 here are the notable Wii titles (from IGN):
June 22, 2008 Rock Band (game only)
June 23, 2008 Top Spin 3
June 24, 2008 Alone in the Dark
June 29, 2008 Guitar Hero: Aerosmith
July 8, 2008 Final Fantasy Fables: Chocobo's Dungeon
July 8, 2008 SNK Arcade Classics: Volume 1
July 15, 2008 We Love Golf!
July 29, 2008 MLB Power Pros 2008
August 1, 2008 Rygar: The Battle of Argus
August 12, 2008 Madden NFL 09 All-Play
August 19, 2008 Brothers in Arms: Road to Hill 30
August 25, 2008 Mario Super Sluggers
August 26, 2008 Harvest Moon: Tree of Tranquility
August 26, 2008 Tiger Woods PGA Tour 09 All-Play
August 29, 2008 Sam & Max Season One
September 1, 2008 LEGO Batman: The Videogame
September 7, 2008 Ultimate Band
September 8, 2008 Don King Presents: Prizefighter
September 16, 2008 Monster Lab
September 16, 2008 Star Wars: The Force Unleashed
September 16, 2008 Tom Clancy's HAWX
September 22, 2008 de Blob
September 22, 2008 SimCity Creator
September 23, 2008 NBA Live 09 All-Play
September 23, 2008 Samba de Amigo Wii
September 30, 2008 Lost in Blue: Shipwrecked
October 2008 Crash Bandicoot: Mind over Mutant
October 2008 Deadly Creatures
October 2008 Ghostbusters: The Video Game
October 2008 Guitar Hero World Tour
October 2008 Mushroom Men: The Spore Wars
October 2008 MySims Kingdom
October 2008 NHL 2K9
October 2008 Spider-Man: Web of Shadows
November 2008 FaceBreaker
November 2008 Harry Potter and the Half-Blood Prince
November 2008 Need for Speed Undercover
November 2008 Quantum of Solace
November 2008 Rayman Raving Rabbids TV Party
November 2008 Sonic Unleashed
November 2008 Tales of Symphonia: Dawn of the New World
November 2008 Tomb Raider Underworld
November 2008 WWE SmackDown vs. Raw 2009
December 2008 Skate It
TBA 2008 Line Rider 2: Unbound
TBA 2008 Little King's Story
TBA 2008 Runaway: The Dream of the Turtle
TBA 2008 Secret Files: Tunguska
TBA 2008 Shaun White Snowboarding
TBA 2008 Star Wars: The Clone Wars -- Lightsaber Duels
Notice the only Nintendo published title there is Mario Super Sluggers. E3 should be very interesting to say the least.
FAKE EDIT: OMG I totally forgot!
TBA 2008 Imagine: Party Babyz
WII GAME OF THE FOREVER!!!!1! THANK YOU UBISOFT!@!!!