Along with the first round of invites going out to Xbox One preview members to check out the new Windows 10 based experience, Microsoft has published a comprehensive list of known issues.
To be clear, this is not a normal Xbox One preview update and initially there are a lot more issues than you'd see on a regular monthly rollout. The list has been posted in full in the Xbox One preview members forums, but we've transcribed it for everyone to see below.
Full story from the WindowsCentral blog...