Quote Originally Posted by Felis View Post
No official source?
Sorry; I got completely distracted and forgot.

A: We'll be implementing a system that makes it less likely for players with lower PvP ranks to get matched with people with higher PvP ranks. Also, because you can obtain all PvP-specific gear after reaching rank 30 and become extremely powerful very quickly, we'll be making adjustments to the timing of rewards to make the upgrade process more gradual. We are also planning for a large update to the Wolves' Den in patch 2.25, at which time we'll raise the maximum PvP rank to 40 and implement the new PvP-specific equipment that I've shown off previously. We're calling this the “Animal Series,” so if you are into PvP, be sure to get this equipment and try it out with glamours.
Quoted from the relevant Live Letter (XIII Q&A) on this forum.

You can argue that it seems to only explicitly state a change in maximum rank and addition of new equipment, but the wording implies that there will be a large update to the Wolves' Den, and the rank increase and equipment addition will happen IN ADDITION to it. That is what PvP players were desperately hoping for given how broken the current system is.