I agree; I feel rather disappointed by this move. The layout feels cookie-cutter to me. If anything, it just looks like an effort to "sell" the project to businesses, especially with the list of projects/companies at the bottom. The no-js default of Mac for the download is also a poor choice, regardless of its popularity, especially considering that Git was created by the author of the kernel Linux.
The previous theme was cute, fun and different. This site does, however, do an excellent job of laying out the information (minus the fact that it needs JS when stylesheets are enabled).