Originally Posted by
JohnnyQuest
I think you're reading too much into it. I think he was just saying that they're not sure if they're gonna change Invocation in this patch. And as we're now on a release build without it, that seems likely.
I'm not sure I agree with his reasoning though. The change was that you trigger the Invocation buff when you were at full mana. Even with Mana Gems available, you'd still need to Evocate quite a bit to keep it at 100% uptime, even if it was just the global to trigger the instant +15% mana.