It's a closed beta and it opened yesterday so there's not a lot to report on actually getting in on it unless you're already there, but Ubisoft has released a trailer for the Rainbow Six Siege beta that is running through the weekend.
Sorry if you missed the beta but the full game releases December 1st, just in time for the holiday season. And this trailer should give you a good idea of some of the detail going into the gameplay of Rainbow Six Siege. Game looks good. I remember the Rainbow Six franchise fondly from its early days in the late 90's and early 2000's but I haven't played one in a while. Maybe Siege is my way back in...