Microsoft guide explains how to submit apps to the Windows Store (video)
Microsoft is serious about Windows 8, and if you're serious about submitting Metro-style apps then there's now a healthily long and detailed blog post (at the source link) explaining how. The post suggests that Redmond's app police are looking at a roughly a six-day turnaround for signing off and publishing the average title, with content compliance taking the longest time because it involves "real people." As the real person in the video after the break makes clear, your first goal should be to reserve your app's name so no one else can take it. (You do have a name for it, right?)