Ubisoft has released the (Rainbow Six) Rainbow 6 Siege update 2.11 August 25 patch today, and this seems to be just for PlayStation platforms. There’s no new content in it, and seems to be for stability only.
Rainbow 6 Siege Update 2.11 Patch Notes | R6 Siege Update 2.11 Patch Notes | Rainbow Six Siege Update 2.11 Patch Notes:
Here’s the announcement from Ubisoft:
There will be some infrastructure maintenance on PlayStation today, August 25th.
Video gamePlayStation 4 and 5: 11:15am EDT / 3:15pm UTC
⏲Estimated Downtime: 30 mins
As you can see, this seems to be for the PS4 version of the game only. In case you’re curious what the devs are working on for Crystal Guard, here are the latest patch notes from the PTS version of the client: