I don't get the sense that Vettel fits with the Ferrari ethos/culture.
Maybe that's why they get him. Since the start of this season, the team has been through a number of shake-ups, so it may well be that they hope to get something different than their usual style, and become a more modern team, like Red Bull or Mercedes. Of course, this can also not work out, like it did for McLaren... Still, we have yet to see if Boullier will be able to wrestle that team into shape with the new engine.
I wonder who Toro Rosso will recruit to side Verstappen. Keeping JEV would be somewhat obvious, but after showing him the door earlier this season, also a bit awkward. And there's always the option of drafting in Palmer or Sainz this late in the season.
Alonso to McLaren is very likely at this point, but it's strange that Ferrari don't say which contract is discontinued to accommodate Vettel.
Magnussen versus Button is also far from a done deal, I think. If Alonso does go to McLaren, they might give Button one more season, and have Magnussen in reserve, to get a strong developmental season in. On the other hand a two-old-men team hasn't worked out lately in F1, so I'm not convinced either way.
The real shame is that none of the mid-field talent gets picked up, unless you're in a Toro Rosso, and have the right timing. Perez was a bit of a glimmer of hope in that respect, but the way they dropped him, was pretty rough. Of the current crop, I'd say Rosberg is probably the one to most recently graduate from a mid-grid team to a top-notch team with any kind of permanence. And that was with the Mercedes' Brawn acquistion almost 5 years ago. You'd hope that Bottas were to get a constructor-funding level contract in the next two or three years. Also, Grosjean needs to upgrade his ride, he's shown some solid performance, but Lotus dropped to backmarker quality.
Oh, and good job, Rosberg, for dominating quali. Of course, with the rain tomorrow, things are going to get unpredictable..