All throughout Isaac Asimov's novel
Second Foundation, the lead characters are trying their best (for good or ill) to guess the location of that shadowy organisation. By the end, the number of people who say "I happen to know where the Second Foundation really is!" can no longer be counted on one hand.
All the characters who make a statement on the matter turn out to be wrong - with the single exception of the First Speaker of the Second Foundation itself. Anyone who actually knows says nothing to non-Second-Foundationers, and the only other man who knew, fifteen years before, had his head blown off to prevent him revealing the secret. While I don't think Pentax/Ricoh would ever resort to that, it's a fair bet that anyone who's actually handled the beast has signed a binding agreement to keep quiet, with heavy civil penalties ensuing if they open their mouth.
So until the Official Big Reveal from Pentax/Ricoh, WE KNOW NOTHING.