Warlords of Draenor Gem Changes

It is no secret that there are going to be big changes to gems come WoD. They announced reduced slots as well as armor that changes with your spec, leaving a lot of questions up in the air. In the past couple of days, one of WoW's Game Designers, @Celestalon has been tweeting up a storm on twitter about the gem changes. So here's what he had to say:

So there are no longer Primary stats on gems. Guess that answers the question of gear swapping, even for tanks. Something to do with the space-time continuum I suppose. A lot of WoW news outlets are covering this as a brand new development, but all of this was actually mentioned previously in this blog post by Crithto about a month ago. Honestly I had not seen that post either, and only noticed when the blues tweeted about it, and I did some research, and that's why I'm covering it now. So, for now at least, from the tweets and the blog post we only know the following stats will be on gems:

1. Critical Strike
2. Mastery
3. Haste
4. Spirit
5. Bonus Armor
6. ?PvP Power - this one is going to be a secondary stat on gear, but no specifications whether or not it'll be on gems.

That's it. There are other secondary stats that are being considered for WoD, but not as gems (supposedly to reduce confusion, but I don't think that's the case) they are: Readiness, Amplify, and Multi-strike. I'm sure that will make everything more "logical" to people and "clear up" the confusion of hit, parry, and dodge. I digress.