Last night, the Yahoo Search blog warned us of a search index update that is currently taking place. Dan Rampton from Yahoo said, "We're rolling out a web index update over the next few days. During this process, you may see some ranking changes and page shuffling in the index."
Originally I thought it may have been a delayed confirmation of the unconfirmed August Yahoo Search shuffle but maybe not.
A WebmasterWorld thread has one webmaster reporting seeing a new change in his rankings. I tried looking at some of the stats on this site, but due to being included in Google and Yahoo News, the stats I have are a bit skewed. So I personally have not seen significant changes in how this site ranks in Yahoo, maybe slight changes on some of my other sites.
Did you notice an update?