The latest Warlords of Draenor alpha patch notes have been released, and they come with some pretty hefty changes to monks--Mistweavers in particular. Blizzard has been experimenting with the monk class, and that comes as no real surprise. They were the new kids of Mists of Pandaria, so it's expected that they'll be getting relatively large changes in the expansion immediately following their introduction. Death Knights went through the same thing in Cataclysm, so this seems to be just part of the new class cycle. Keep that in mind as we go over the changes; this is still alpha, after all, and if there were any time for Blizzard to play around and see what happens, it's now.
The biggest changes in the current build involve haste, the global cooldown, and the separation of the traditional healing style of Mistweavers versus the Eminence dps-while-healing style. Like Warriors, a number of the monk changes show a great emphasis on the importance of stances, and how different stances affect gameplay. The monk change notes are after the break, with the strikeouts left intact so as to illustrate the dynamic changes from the last alpha build. Red text in the original that is not struck out has been bolded below.