In dual statements today, Ubisoft announced the delays of both Rainbow Six Extraction and Riders Republic.
Tom Clancy's Rainbow Six Extraction, originally scheduled to release on September 16, has been bumped to January, 2022.
Riders Republic is taking less of a leap, bumping from September 2 to October 28 - so it will still be on time for the holiday season.
You can read more about the delays here and here, but they pretty much say what you would expect - that the teams behind these AAA experiences just need more time to polish them up. I'm never much bothered by delays, as they often just translate to a smoother and more satisfying experience.
We'll keep you posted if more news develops on either of these delays.