From what is posted in the fourm posts the "test" rom has Sense 3.6, which if remember correctly is the same that all of the HTC phones that have received the ICS upgrade have received. It is ICS 4.0.4
The OTA won't be rooted, nitsuj17 just added root as a feature to the leak. Honestly, if rooting voids warranty and gives the ability to have many features over stock (tethering, removing bloatware, etc.) who would ever think that Verizon would actually send out a rooted OTA? I can't see that ever happening.
Unless you mean if a dev will put out a rooted version of the OTA when possible. Then yes it's pretty much guaranteed that a ROM or multiple ones will be posted in the future.