The radome and Sparrow launcher removal was "just in case", and since it has been determined from all the heat & airflow sensors that there was nothing that would have damaged them, they will be replaced and left there when F-35B flights begin in earnest.
The re-coating of the aft part of the flight deck was with normal non-skid, and was done in part to examine the effects of the landing exhaust.
There was a
small patch of a new non-skid coating (Thermion) applied (in the pics it is a slightly lighter color, with the yellow line being a little lighter as well) in the re-coated section, but this was developed for not only increased heat tolerance (specifically for the MV-22 Osprey, which DOES have a deck-heating problem), but also greatly improved durability... it is supposed to last at least 4 times as long as the current coating.
If it holds up like they expect, it will be used on all USN flight decks... CVNs included.
Here is the url for more info on Thermion:
Non Skid Coatings, Aluminum Spray Wires, Non skid Spray Wires - Thermion Inc.
Here is a pic of Wasp's aft deck... you can see the Thermion section pretty clearly (the pic is really big, so here's the url):
http://i619.photobucket.com/albums/t...gain_630-1.jpg