When WordPress officially releases a new version, I will test all my themes against the latest version. It will be an ongoing process so you will have to wait a bit before ALL the themes complete the testing. When I have finished testing a theme, I will update it under the “Change Log” section of the respective theme pages.
However, my testing might not be so thorough so if you find that any of my themes that doesn’t work well on the most updated WordPress version, please let me know and I’ll look into that and solve the issues the soonest.
Do I provide support for the older WordPress versions?
I am afraid not. Though the upgraded theme should work with the older version, I advise you to upgrade your WordPress to the latest version and use this theme that has been tested against that version.