Right from Major Nelsons blog. One of the cool new features that our team has been working on is Marketplace on the web. When the New Xbox Experience launches on November 19th, you’ll be able to browse the Marketplace on Xbox.com, and queue up downloads. The next time you turn on your Xbox 360, the aforementioned items will begin to download. Also, when I make a post about a new demo, or DLC here, I’ll be able to link directly to that download so you can read it here, click the link and automagically add it to your download queue. Easy. Screenshots: Gamerscore Blog
Well it's about time. I was hoping that they would do that. I really hate browsing the Marketplace on my Xbox.