Now that FFXIII-2 is announced and will be released in 2011, are we going to XIII-2 before Versus? OR we will see both in 2011?

Personally I expect to see XIII-2 released first. Versus will keep competing with Duke Nukem Forever for longest developement time.

Given one actually has a release season in mind..I would say that one. 

I think we will see Final Fantasy XIII-2 at the end of the year (around Christmas) and Versus XIII in early 2012

XIII-2 will release in December 2011, in Japan. March/April 2012 in the West.

Versus XIII will release in July/August 2012, in Japan. November/December 2012 in the West.

Kinda obvious isn't it FFXIII-2 and FF:0-Shiki were confirmed for 2011 releases (Japan, hopefully world wide or world wide shortly after), FFVSXIII still has no worldwide release date - though since its having voice work done development has to be nearly finished. Therefore its safe to assume that FFVSXIII will come out in 2012, if for no other reason then because 2011 already has 2 FF games planned for release and FF:0-Shiki can't really be delayed with the PSP2 on its way.

FFXIII-2 because it was the cut content from FFXIII... less work to do.

FFXIII-2. And rightfully so. Now that I've heard about XIII-2 I can wait another decade for Versus.

This. As much as I'd like to think otherwise, I can't.

Two more years guys (Versus 13 on 2013), sadly Kingdom Hearts 3 pushed for PS4 sometime 2016.

hmmm, gee i dunno I guess I could go with the one that has a confirmed release window....but that would obviously be too obviously obvious