2B is going to be relocated elsewhere (I forget where now) so perhaps this is preferred satellite over the older 2A.
Edit: 2B is going to 19.2E according to the SES fleetmap PDF.
Just looked at the pdf file & a some of the info is interesting 2C back to 28.2 east ? well this has already happened & then it went to 31.5 & now at 19.2 east I cannot see astra 2C returning as the capacity of Astra 2E,2F & 2G will be more than enough for 28.2 east also bearing in mind that by 2015 Astra 2C will be 15 years old & at the end of it's life,
1E at 5 east when we know that it is at 51 east atm still moving east Astra 1E & will be 20 years old by 2015 so cannot be included in the future geostationary satellite plan,
3A active at 23.5 east in 2015 I do not think so as 3A like 2D has come to the end of it's useful life,
A more probably move will be that Astra 1H will move to 23.5 east when Astra 1N goes to 19.2 east
There must be some more accurate info than this pdf file -http://www.ses.com/7543799/SES_fleet_map.pdf
Astra 2A & 2B may well move to new locations after Astra 2E,2F & 2G take over at 28.2 east,
(23.5 east,19.2 east,5 east) being the most likely.