I have installed the update. It took about 10 minutes to install and boot again.
I have not yet noticed any drastic improvements or new issues, but I have not been using it for very long after the update. It is running relatively fast, but it usually does right after a boot.
The thing that jumped out at me when I read the update features was this: "The following applications have been removed as preloaded: IM, Blockbuster, Verizon Video and Verizon Vcast." The first thing I did was to try and uninstall Blockbuster through the default application manager. Rather than an "Uninstall" button there was only "Uninstall updates" which I pressed, and it said "Uninstall failed." However, there is no longer an option to force stop or uninstall and the application manager says it now takes up 0.00B. So I hope it's effectively gone?
Let's Golf 2 and NFS Shift were split into 2 applications so you can uninstall the bulky data portion, but unfortunately not the smaller application. This wasn't mentioned in the update features, did this happen on the last update and I just didn't notice?
After I saw that I could uninstall portions of those two games I got hopeful that maybe I could get rid of things like Slacker Radio. Unfortunately not.
I just called my voicemail to see about the improved call clarity. It does sound a little clearer to me, I haven't tested it talking to an actual person though.