Sadly no 1:1 sorry to confirm.
There you have the options in the manual, who are present in the production unit /w firmware 1.00, the one I just took this : There may display too many of them to do your technique. Would I be adding to the debate that I too think a real square crop for framing is, if not better (=subjective), a real way of thinking the way you shoot. Imagine a TLR fan who could shoot from the hips with a liveview in 1:1. He would love it, and responding to that need Pentax/Ricoh would follow. Pentax K1 has that very nice tilting screen that is IMHO a revolution.
PS : I read in a preview that the K1 supports the really silent electronic shutter too, and guessing what when I really got it that it's not.