i'm sure he'll get well soon enough, and the new series will go ahead as planned, and you can be sure Clarkson will be there on the first episode with a call of "so, who wants to see Hammond's crash?", followed by a cheer from the audience and a "roll the tape". They'll never let him forget it.
Plenty of news and updates about it on Top Gear's web site, as well as a link to drop Hamster an email. Sounds already like he's gonna recover well enough. Here's hoping Top Gear's hyper lil' teeth-whitening sponsor (and fellow muscle car enthusiast) gets well soon and is back hosting with James and Jeremy in no time!