Wii Software Q1 2010

NewU Fitness First Mind Body Yoga & Pilates Workout (Black Bean Games) - 02-Apr
Monster Hunter Tri (Capcom) - 23-Apr
2010 FIFA World Cup South Africa (EA SPORTS) - 29 Apr
Circus Party (505 Games Ltd) - 30-Apr
Iron Man 2 (SEGA) - April
Sin and Punishment: Successor of the Skies (Nintendo) - 07-May
Prince of Persia: The Forgotten Sands (UBISOFT) - 13-May
No More Heroes 2 (Rising Star Games) - 22-May
Samurai Warriors 3 (Nintendo) - 28-May
B-Unts-Build It! (505 Games Ltd) - 28-May
Shrek Forever After (Activision) - May
All Star Karate (THQ) - May
Repetto presents Ballerina (Deep Silver) - May
Tournament of Legends (SEGA) - May
Super Mario Galaxy 2 (Nintendo) - 11-Jun
Toy Story 3 (Disney Interactive Studios) - 17-Jun
NatGeo Quiz! Wild Life (Black Bean Games) - June
DanceDanceRevolution HOTTEST PARTY 3 (Konami) - June
U-SING Girls Night (Mindscape) - June
Vacation Isle: Beach Party (Warner Brothers Interactive Entertainment) - June
top model academy (SevenGames) - Q2
The Crown of Midas (SevenGames) - Q2

Nintendo DS Software Q1 2010

Runaway A twist of fate (Focus Home Interactive) - 15-Apr
Diva Girls: Diva Ballerina (505 Games Ltd) - 23-Apr
Mind, Body & Soul: Spellbound 2 (505 Games Ltd) - 23-Apr
Emergency Rescue (505 Games Ltd) - 23-Apr
Mind, Body & Soul: Blend It! (505 Games Ltd) - 23-Apr
WarioWare: Do It Yourself (Nintendo) - 30-Apr
Iron Man 2 (SEGA) - April
Sonny With a Chance (Disney Interactive Studios) - 07-May
Petz Fantasy (UBISOFT) - 12-May
Prince of Persia: The Forgotten Sands (UBISOFT) - 13-May
Galactic Taz Ball (Warner Brothers Interactive Entertainment) - 14-May
Jam with the Band (Nintendo) - 21-May
B-Unts-Build It! (505 Games Ltd) - 28-May
Shrek Forever After (Activision) - May
Shooting Watch (HUDSON SOFT CO.,LTD.) - May
Repetto presents Ballerina (Deep Silver) - May
Sports Island DS (Hudson Soft) - May
Cradle of Egypt (Rising Star Games) - May
Rooms: The Main Building (Nintendo) - 4 June
Club Penguin : Herberts Revenge (Disney Interactive Studios) - 17 June
Toy Story 3 (Disney Interactive Studios) - 17-Jun
Sherlock Holmes and the Mystery of Osborne House (Focus Home Interactive) - 24-Jun
Mega Man Zero Collection (Capcom) - June
top model academy (SevenGames) - Q2
The Crown of Midas (SevenGames) - Q2

Source

For those that may be wondering Jam with the Band is the Western name for Daigasso! Band Brothers.

Well, May will be big for European Wii owners.

Games I would buy in April: MH3 and FIFA 2010
May: Prince of Persia, NMH2, SMW3, S&P2 and Tournament of Legends.
June: SMG2

Q1 has been though :/

Q1? you do mean Q2 right? wait what month are we in now!! OMG has the games been released already?!

Metroid Other M better come early July or i will sue Nintendo for emotional abuse

Look here.

It's Q1 of their financial year they're talking about. And it looks epic.

It's Q1 in terms of the financial year.

Calendar Q1 has passed yes, but fiscal Q1 for Nintendo (and many others) runs from April 1st through June 30th.