None of these are set in stone.

March 19:
The Bounty Hunter
Diary of a Wimpy Kid
Repo Men

March 26:
How To Train Your Dragon Presented in Dolby Digital 3D
Hot Tub Time Machine

March 31:
The Last Song

April 2:
Clash of the Titans
Why Did I Get Married Too?

April 9:
Date Night
Letters to God

April 16:
Kick Ass
Death at a Funeral

April 23:
Wall Street: Money Never Sleeps
MacGruber
The Back Up Plan
The Losers

April 30:
Furry Vengeance
A Nightmare on Elm Street

May 7:
Iron Man 2

May 14:
Robin Hood
Letters to Juliet
Just Wright

May 21:
Shrek Forever After 3D