[Template-haskell] TH stability and support

Hello, is Template Haskell likely to be implemented in Hugs and/or NHC in the nearer future? I think, TH could be very useful for me but actually I don't want to restrict myself to a certain compiler/interpreter. Can I be sure that TH will continue to be supported by GHC? I addition, I'd like to know if TH is rather stable now or if its interface will make bigger changes in the future. Ciao, Wolfgang