A new Microsoft adCenter Desktop Beta application is reportedly coming this November 6th. Microsoft adCenter Desktop Beta allows adCenter advertisers (ads on Bing) to manage their ads via a desktop application, as opposed to the web console.
A WebmasterWorld thread has a post by an advertiser who said he received an email from Microsoft that this update is coming. Here is a copy of that email:
There is no word yet on the actual features coming to this new beta.
Forum discussion at WebmasterWorld.