Oculus Rift is in the mail! Development kits began shipping to customers on Wednesday, and even if you have yet to receive a tracking number of your own, a kit may very well be on its way. The Oculus team has been "tied up at GDC" this week, which explains the delay in sending out tracking info, but folks taking care of logistics have apparently been hard at work, prepping some 10,000 development kits for shipment. Of course, not every set will be on its way to a developer right away -- it does take time to get that many kits out the door -- but if you're expecting one at your front porch, it's likely to arrive very soon. In the meantime, the Developer Center has opened up to devs, with access to the SDK, Unity and Unreal Engine integrations, forums, wiki and other documentation. The team also published a video of its SXSW panel in full for your enjoyment -- you can catch it just past the break.