Mystery buff incoming for priests! [Update 2]

Yep, a mystery buff -- doesn't that sound exciting? We have no idea what it is, because the CMs don't have the go-ahead to tell us yet, but Nethaera claims it's "a positive change." And though she's trying not to overplay it, there are a lot of hopes riding on it being something good. Nethaera hopes to have more information for us on Tuesday -- but until then, it's speculation run wild! Do any of you have predictions for the priest's mystery buff?

Update: Nethaera is currently telling us that we may get news tomorrow, Wednesday the 28th. Sorry to get everyone's hopes up, but hopefully we'll have some official news soon.
Update 2: I believe we have the final word on improvements for priests this patch via Nethaera.

This article was originally published on WoW Insider.