Hello,
in the next few days and weeks BigFix external sites will be re-published to update the site content signature, in preparation for the upcoming BigFix 11 release.
The re-publication will be transparent for the users, so no action is expected from you at this time.
If you see a new site version that is not announced through the usual channels, this means the site is being re-published as per above, with no content change.
We don’t expect any problem to arise as a consequence but, should you experience any issue, please report it through customer support.