Was There a New DS Zelda Game in 2012?

DS Zelda Releases in 2012

No. The Nintendo DS was discontinued in 2011, and no new DS Zelda games were released in 2012 or later.

DS Zelda Timeline

• The Legend of Zelda: Phantom Hourglass – June 2007 (JP) / Oct 2007 (NA/EU)
• The Legend of Zelda: Spirit Tracks – Dec 2009 (JP) / Dec 2009 (NA) / Mar 2010 (EU)

2011–2012 Zelda Releases (Non-DS)

• The Legend of Zelda: Ocarina of Time 3D – June 2011 (Nintendo 3DS)
• The Legend of Zelda: Skyward Sword – Nov 2011 (Wii)
• The Legend of Zelda: Four Swords Anniversary Edition – Sept 2011 (DSiWare, free limited-time)

If you're looking for handheld Zelda after 2012, the next entries were A Link Between Worlds (3DS, 2013) and Tri Force Heroes (3DS, 2015).