when was it released ?
February 12, 2010
We Are the World 25 for Haiti
The 2010 version of "We Are the World", released under the name Artists for Haiti, debuted on the NBC television network on February 12 during their coverage of the 2010 Winter Olympics opening ceremony. 
who sings in the song we are the world 25 for haiti Michael Jackson and Lionel Richie
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We Are the World 25 for Haiti [SEP] Release and promotion
The 2010 version of "We Are the World", released under the name Artists for Haiti, debuted on the NBC television network on February 12 during their coverage of the 2010 Winter Olympics opening ceremony. When the song premiered in its paid time spot, the video was edited in length, due in part to the time spent introducing the song. However, the full-length music video was shown on NBC the following day during daytime Olympic coverage. Similar to marketing of "We Are the World", a music video of the song was filmed and released. The music video was directed by Academy Award-winning film director Paul Haggis.