Yeah, to clarify. The change back to the old way is part of 6.5 beta 6. This was dune due to public feedback on the infopop boards. I'll let them know there are fans of it and see what they do.

From the changelog:
Returned the jump to new posts to the old functionality due to public feedback. Removed the little arrow and made it so clicking on the subject takes you to the first unread post as in 6.4 and prior.