I met an inbound DFW-TUL F100 today, and was pleasantly surprised to find it had been redone inside, for the most part.
The First Class cabin had new seats (similar to those in the S80 & 737s). The wall coverings, carpeting & curtains have been updated with AA's new interior look. The overhead bins were the new, larger, rounder ones. The only drawback was that the coach cabin still has the old (light blue) seats. Other than that, it looked like a completely "new" aircraft. I have to admit, the updated cabin makes quite a difference. It was almost enjoyable to be on! The cabin had an open feel, and it was so much brighter. Even the crew changeover was surprised & delighted with the "new cabin." Now, if AA will only put in the new coach seats, the F100 will be a winner!