These 4 or 5 stamps were rumored for 2013, then supposedly pushed off to… when? Speculation is they will be issued at Comic Con 2014 in San Diego, which runs July 24-27. Since science fiction is also called “speculative fiction,” it’s appropriate to speculate that the subjects are likely to include Isaac Asimov, Robert Heinlein, Ray Bradbury, Philip K. Dick and Frank Herbert.
Frederik Pohl (who passed away last September 2) might also be a strong candidate. He, Asimov and Heinleinwere called the Big Three of SF in the 1950s and 1960s, but at the time the stamps were first rumored, he was still alive.
Noted Science Fiction author Robert Silverberg wrote an editorial in Asimov’s SF Magazine in support of an Asimov stamp, which you can find here (but don’t try the link at the top; it no longer works).
A word of caution to cachetmakers: Asimov and others disliked the term “Sci-Fi.” Oh, and I’m an avid reader of speculative fiction (which includes fantasy and alternate history), so I know the subject well.
As we get more information, we’ll post it in this “thread” or blog entry.