SingPost's MyStamps is going to feature DC Comics Super Heroes, e.g. Batman, Superman and Wonder Woman. I think I see Green Lantern and Aquaman also. The MyStamps will come in a comic like booklet that features scenes from the respective comics. The different stamp values range from S$0.26 to S$1.10 or you can get the the entire set for S$39.90. SingPost has also put in a comic style carrier bag with A2-sized full-colour poster featuring all the DC Super Heroes with every purchase. The sets will be available from 16 June 16 to 3 October at the 62 or so SingPost offices. Of course, you can also place orders via the online portal vPost.
But course it's a MyStamps set and not really a stamp issue, I'm not sure if I would buy the set... heh. These stamps featuring Super Heroes are not new. A couple of US Stamps already have these heroes on them, e.g. this USPS set in 2006.