Now that the first domino has fallen:

Raikonnen to Red Bull, which leaves a vacancy at Lotus that is filled by the guy RBR was supposed to install, so Horner negotiates the Raikonnen deal which places
Ricciardo at Lotus. But Lotus is rumored to be needing at least one pay driver, which means Grosjean is out, and . . .
Maldonado to Lotus. Ferrari are ready to move on without Massa, so
Rosberg to Ferrari, which means someone finally gets their Mercedes dream:
di Resta to Mercedes. And with Force India switching to Ferrari engines (they are, aren't they?),
Bianchi to Force India and Sutil stays. But back to STR, who now need to promote someone, so
da Costa to Toro Rosso, with Vergne, who gets another year. Williams need to replace Pastor, so
Grosjean to Williams, who retain Bottas.

Now on to the also rans:

Although I think he has done a good job, Giedo is likely to get the boot and
Alexander Rossi moves to Caterham, joining Pic. The luckless Hulkenberg has nowhere to go so he stays, and his new teammate is an old employee:
Massa to Sauber, replacing Gutierrez, whose only hope is to be a 3rd driver somewhere. The final piece is Chilton's teammate, and I'm going with
Petrov to Marussia.

The only team that continues with their current line-up is McLaren.

There's an 80% chance that I'm wrong about just about everything above.

I really hope Valsecchi gets the nod at Lotus.