The HTC Rhyme should see Ice Cream Sandwich at some point – both Verizon and HTC confirmed that – however, this is not it. This would be a small bug fixer as we wait as patiently as possible for that to arrive. In this update to build 2.20.605.3, Rhyme owners will see some minor changes to their docking experience, a 5-bar signal strength meter, and some other overall experience enhancers. Again, nothing major, but someone you will want to grab as it becomes available.
The update is 67.8MB in size. More info.