@DeviousUn When we start the tuning pass, you'd know, because there will be changes to many specs all at once. Estimating two PTRs from now.- Greg Street (@Ghostcrawler) August 6, 2013
If you weren't already aware, the way Blizzard develops the classes on the PTR is as follows. They start off with mechanics changes, so, say, for example, they looked at shaman spread healing, and decided it still needed buffs. The mechanics changes were to alter Chain Heal so it didn't decrease in effectiveness as it bounced, and to make the cooldown incurred by glyphing it far lower. Those are mechanics changes. There have been others, too, of course, but the main thing to remember is that these relate to how spells work, the mechanics of spells.