I watched CD Projekt's press conference at Game Corner (you won't see any conference there now; the site contains links to TW 2's gameplay videos). The game's presentation was fine, but what really interested me were the questions. Unfortunately, they were pretty :banal:, :underwhelming: and :boring:; still, the last sentence of the whole conference is, I think, important for anyone who played TW in English:

<p style="margin-left:50px;border-style:solid;border-width:1px;border-top-color:#ffffff;padding:5px;border-right-color:#bbbbbb;border-left-color:#ffffff;border-bottom-color:#bbbbbb;">"The game is being written in English; translations into other languages (including Polish) will follow."

So if the writing is poor this time, they won't be able to blame this on the translation. Seriously though, remembering TW's translation fuckup, this seems to be a very reasonable move for a multi-language game.

edit: just got a confirmation from Tom Ohle. Well, it's not 100% confirmation, but anyway, read it to get the full picture:<p style="margin-left:50px;border-style:solid;border-width:1px;border-top-color:#ffffff;padding:5px;border-right-color:#bbbbbb;border-left-color:#ffffff;border-bottom-color:#bbbbbb;">In short, yes that's correct. We have a native English speaker on the team, so while the game is being written by Polish writer(s) it's being implemented in the game in English.