This is likely the tenth time Pentax says that they are working on a new Full Frame camera (Source: Pentaxforums). But that timeit’s said that Pentax has already a working prototype. And seeing how hard it is to really compete in the Pro segment against the Nikon-Canon dominance I would not be surprised to see a Mirrorless Full Frame from Pentax. The advantages would be clear:
1) No real competition yet (Leica doesn’t count). And no Canon-Nikon hegemony to deal with.
2) It would have the famous “WOW” factor. It would be a unique product and certainly many would look at it.
So let’s go Pentax…just (finally) do it! :)
P.S.: It is rumored that Samsung may announce a FF mirrorless in Spring. While more reliable rumors are coming from the Sony front where a new NEX-FF system will be launched in 2014.