A Verizon document that appears to be a roadmap with the status and dates of upcoming updates has leaked on Reddit. While something like this could easily be falsified (and we've seen incorrect dates in the past) it seems unlikely that someone would go through the trouble of producing a four-page document including BREW update paths just for some karma and upvotes. The roadmap shows that the HTC Rezound Android 4.0 update is in testing and will pushed out on May 9th; the Motorola Razr and Razr Maxx ICS update is also in testing and will be updated on May 21st; and the Motorola Xoom 3G and 4G updates have already completed their tests and are seemingly very close to being pushed out by Google.
Verizon has already announced that updates for these devices will be coming at some point, and we've recently learned that Motorola will be selling the international version of the Razr Maxx with Android 4.0 in May. Verizon hasn't confirmed the validity of the document, but May 9th isn't too far away, so hopefully we'll hear some official news on updates soon.