Doctor Who Series 6 Spoilers: Omega 2

Sorry for the lack of posting, i seem to be one of these People who can catch Flu like *snap*, Anyway, i came across this and have linked several pieces together:

This Was In the Bizantium: This Was Spotted On Set: LINK

Also if you look very closely in the Bizantium pod where River had the clip of the angel this symbol was also theyre too. My theory is that these are linked, but my main interest is that the new symbol spotted on set is Meaning Omega (as the symbol shown is the greek symbol for Omega) and the 2 lines on the image meaning 2nd, (2nd regeneration), in summary these must be linked.

Does this mean the Clericks are back?
Is river Song Omega 2?
Are they linked or just a coincidence (Theyre's no such thing in Doctor Who, Unless your busy)
What ever you do, keep an eye out for Omega Symbol In series 6!