If you pre-ordered the Virtuix Omni virtual-reality treadmill, it's time to start rearranging the living room furniture. Early backers will be able to strap on their Oculus Rift and start shooting in the virtual battlefield of their choice come July. If you haven't ordered the enormous $500 gaming accessory yet, you won't have to wait that much longer to start running in place – orders taken today are expected to ship in September. And with Facebook's acquisition of Oculus, maybe we'll be walking through our friends' Hawaiian vacation photos by winter.