We have known the official set of features for BIS 4.0 for over a month now but as far as I can tell RIM has yet to roll out the update. That may change soon if this latest post on the official BlackBerry Support Forums announcement site is any indication. Momehta, a support forums administrator, has posted a new article “Announcing BlackBerry Internet Service 4.0” and pointing to the 1+ month old knowledgebase article.
Let us know if you notice any of the new BIS 4.0 changes for your carrier. I checked on my AT&T BIS and it still does not have the password recovery option and improved Google Calendar sync.