Valve and Oculus are targeting roughly the same window to release the consumer editions of their respective VR equipment. While technical information will likely wait until next week, we are hearing about delays ahead of CES. In the Vive's case, they couldn't afford to wait until the show, because it was supposed to launch in Holiday 2015. That has been revised to April.
But this is about Oculus. Their headset is still expected to arrive on time, which is enough for many experiences. The Xbox One controller is supposedly the default for this platform. This puts them out of the running for motion-control software, as seen on the Vive, though. Oculus is developing their own, called the Oculus Touch. They said they were launching without it and that it is optional. We now know that this will be in the second half of the year, which could be as early as the “few months after the Rift” as we were told, or as late as a year from now.
We're already hearing concerns about incompatibility between the two systems, since it will lead to some level of platform-exclusivity. Lead time could help a platform gain ground, unless consumers outright refuse to buy in to any of them in case it ends up being the Betamax or HD-DVD. I'm not sure what we, as consumers, can do to prevent any of these negative outcomes, but it's something we need to be mindful of, especially throughout 2016.