Will changing to newest iteration of Tmax400 film from older versions require change in my now standardized developing times?

Hi All-I've been recently shooting more 35mm from a store of refrigerated Tmax 400 that's close to 15 years old. I've used DDX developer 1:9 and have been happy with the results. Now that stash of film is gone + I need to buy more. I've noticed the Kodak prices have really accelerated but I'm also concerned about how I've reached a standardized film/developer time combination te all to re-calibrate all with the new T Max versions? If that's the case, perhaps I should consider less expensive Delta 400.
Thanks for advice,
Marty

They should all be the same, except for the cost. Refrigerated or frozen film retains its freshness and original characteristics. I have both black & white and color C41 film that have been frozen for over ten years and show no deviation from new film.

TMY became TMY-2 in 2007. There were changes made at that time.
Check here to see if your old film was the pre-2007 version.
https://125px.com/docs/film/kodak/f4043-TMAX_400-2007.pdf