Got it in Dutch but you should be able to understand it all:
3DS
eShop
eShop - Dillon's Rolling Western (Nintendo) - Feb 22, 2012
eShop - (Virtual Console) Punch-Out!! (Nintendo) - Mar 1, 2012
eShop - (Virtual Console) Super Mario Bros (Nintendo) - Mar 1, 2012
eShop - (Virtual Console) Dr Mario (Nintendo) - March 2012
eShop - Fun Fun Minigolf (Shin'en) - March 2012
eShop - SpeedThru: Potzol's Puzzle (Nintendo) - April 2012
eShop - 3D Solitaire (Zen Studios) - April 2012
eShop - (Virtual Console) Toki Tori (Two Tribes) - Q2 2012
eShop - Art of Balance Touch (Shin'en) - Q2 2012
eShop - Colors! 3D (Collecting Smiles) - Q2 2012
eShop - Mutant Mudds (Renegade Kid) - Q2 2012
eShop - Picross e (Jupiter) - Q2 2012
eShop - Marvel Pinball 3D (Zen Studios) - Q2 2012
Demo
Demo - nintendogs (Nintendo) - Feb 22, 2012
Retail
Carnival Games Wild West 3D (2K Play) - Mar 2, 2012
Metal Gear Solid Snake Eater 3D (Konami) - Mar 8, 2012
Ben 10 Galactic Racing (Namco Bandai) - Mar 16, 2012
Rayman Origins (Ubisoft) - Mar 16, 2012
Kid Icarus: Uprising (Nintendo) - Mar 23, 2012
Bit.Trip Saga (Rising Star) - Mar 23, 2012
Farming Sim 2012 3D (astragon) - Mar 29, 2012
Hundle & Katchen 3D (dtp) - Mar 30, 2012
Rhythm Thief and the Emperor's Treasure (Nintendo) - Apr 5, 2012
Battleship (Activision) - April 2012
The Hidden (Majesco) - April 2012
Pet Zombies (Majesco) - April 2012
Face Racers (Majesco) - April 2012
Nano Assault (Majesco) - April 2012
Mario Tennis Open (Nintendo) - May 25, 2012
Boulder Dash XL 3D (Reef) - June 2012
Spirit Camera: The Cursed Memoir (Nintendo) - Q2 2012
Harvest Moon: The Tale Of Two Towns (Rising Star Games) - Q2 2012
Shifting World (Rising Star Games) - Q2 2012
Super Black Bass 3D (Rising Star Games) - Q2 2012
Jewel Master: Cradle of Rome 2 (Rising Star Games) - Q2 2012
Crash Time 3DS (PQube) - Q2 2012
The Amazing Spider-Man (Activision) - Q2 2012
Luigi’s Mansion 2 (Nintendo) - 2012
Professor Layton 5 (Nintendo) - 2012
Nintendo DS:
DSiWare
Nintendo DSiWare - Cave Story (Nicalis) - March 2012
Nintendo DSiWare - Amoebattle (Intrinsic Games) - Q2 2012
Retail
Jewel Master: Cradle of Persia (Rising Star Games) - Mar 9, 2012
Inazuma Eleven 2 Firestorm (Nintendo) - Mar 16, 2012
Inazuma Eleven 2 Blizzard (Nintendo) - Mar 16, 2012
2 in 1: Meine Tierarztpraxi & Meine Tierpension 2 (dtp young entertainment GmbH) - Mar 30, 2012
Battleship (Activision) - April 2012
Mahjong Mysteries: Legends of Atlantis (Avanquest) - May 18, 2012
Disney. Pixar Brave (Disney) - June-August 2012
The Amazing Spider-Man (Activision) - Q2 2012
To-Fu Collection (Rising Star Games) - Q2 2012
Jewel Master: Cradle of Persia (Rising Star Games) - Q2 2012
Wii
WiiWare/VC
Wii Virtual Console - Mega Man x (CAPCOM) - March 2012
Wii Virtual Console - Metal Slug 3 (D4 Entertainment) - April 2012
WiiWare - La-Mulana (Nicalis) - April 2012
Retail
The Last Story (Nintendo) - Feb 24, 2012
Wicked Monsters Blast (PQube) - Feb 24, 2012
Mario Party 9 (Nintendo) - Mar 2, 2012
Cabela’s Big Game Hunter 2012 (Activision) - Mar 16, 2012
Poke Park 2: Wonders Beyond (Nintendo) - Mar 23, 2012
We Sing Pop! (Nordic Games Publishing) - Mar 23, 2012
BIT.TRIP COMPLETE (Rising Star Games) - Mar 23, 2012
The Ultimate Battle of the Sexes_Quiz & Play (dtp young entertainment GmbH) - Mar 30, 2012
Nickelodeon Dance (2K Play) - Mar 30, 2012
Summer Stars 2012 (Deep Silver) - Mar 30, 2012
Back to the Future The Game (Deep Silver) - Mar 30, 2012
Pandora’s Tower (Nintendo) - Apr 13, 2012
Battleship (Activision) - April 2012
Disney.Pixar Brave (Disney) - June - August 2012
Athletics Tournament (PQube) - Q2 2012
The Amazing Spider-Man (Activision) - Q2 2012
Beat the Beat: Rhythm Paradise (Nintendo) - 2012