Glock is contracted for the next 3 seasons at Virgin, so count him out at BMW Sauber.
I think that BMW Sauber are gonna have new drivers, for certain one is gonna be Jules Bianchi, the other may be a experienced campainger, so the likes of Heidfeld would come into play here. Also watch for BMW Sauber to be taken over by ART.
Williams will stay with Hulkenberg and Barrichello, but feel that they may want to switch to Renault power but the posibility of Epsilion getting that mean they will stay with Cossie power.
Lotus are in it for the long haul, they will keep Trulli for one more year and Kovvy for the next 2 at least.
Hispania will keep Karun, but get another good driver ASAP.
Virgin will stay as is for contenuity.
Epsilion will want a good driver pairing, so Klien and Kimui may be best here. or the posibility of Buemi and Liuzzi with Klien TD.
The top teams will not change much, Kimi to Red Bull is nagging still, but if Webber does leave Red Bull for Kimi to replace him, i feel that he is gonna have Williams and posibly Renault there for him.
Force India will be Sutil and Di Resta
Str-Ferarri will ditch Buemi i feel for Daniel Ricardo.
So far, still too many plauseable posibilitys for me.