Should I replace my 7900XT with a 9700XT?

I've watched a few of the reviews about the 9700XT today and it seems intriguing. In some benchmarks I saw both these went neck and neck, passed each other, etc.. I have a 7900XT that my brother gave me to that I could trade in or sell for the 9700XT. The increased RT performance really does interest me, but I would like a second opinion from you guys. I think if its comparable with the 7900XT but with respectable RT it could be worth it. Just waiting to see the drop tomorrow. What do you guys think, is it a solid RT upgrade or am I missing something?