Are there plans for a MASH movie remake?

No. There were rumors over the past few years that there was likely to be a remake of the 1970 film M.A.S.H., which was directed by Robert Altman and later made into a TV series. However, there is no information online that can confirm this, not even stories from entertainment or gossip sites. The Internet Movie Database lists a M.A.S.H. movie to be made and/or released in 2012, but this is about the fortune telling game "Mansion, Apartment, Shack, House" that people play using pencil and paper.