Looks like there is something healers have been begging for for quite some time might become a reality – trispec! With Mists of Pandaria being such a daily-centric expansion, and with a healer spec really not being optimal for dailies (if it is even manageable), healers have had to ditch running two healing specs, whether two PVE builds or a PVE and PVP healing specs just to have a baddie DPS spec for the mountains of dailies raiders are expected to do.
I know I personally have spent a small fortune in Tome of the Clear Mind switching glyphs and talents on each boss fight, which could be much more manageable if healers were able to have two healing specs plus their daily dps spec. And if you need to change specs completely (such as a druid who has a resto spec and a kitty spec, but is asked to go Bear/Guardian for a specific boss fight, those druids would have to pay a trainer to unlearn one of their other specs before learning Bear, which not only costs gold (aside from all the Tomes required for swapping glyphs etc) but requires a trip to the trainer to do so.
Of course, this information is merely data-mined, which means it might not become a reality. And Ghostcrawler has made a couple references to the fact you shouldn’t read too much into datamined information (which has proven wrong in the past).
@adamholisky We haven’t announced triple spec. With that in mind, take anything data-mine-able with a grain o’ salt.
— Greg Street (@Ghostcrawler) March 25, 2013
@lordthinktank We have not announced anything.
— Greg Street (@Ghostcrawler) March 25, 2013
So let us all keep our fingers crossed that this datamined becomes a reality!