That was one of the changes they made on today's notes so I was basing it on that. We don't know if GC means 33% from the last build or 33% increase from live or from some build in between. Maybe you're right. We'll see. FWIW GC also said not to worry about those numbers right now because they are still being tuned. They obviously don't want mana to be infinite, especially when Fistweaving, otherwise any monk could just burn their mana during hard times and then go Jab->TP to regen. They also obviously don't want it to be so costly that it's not viable. Ascension is a big part of the problem with balancing it as it greatly increases the MP5 of Jab->TP with TP giving back 2% mana now.
It'll also be interesting to see how the legendary meta gem works with Fistweaving. Whats the realppm going to be and will Jab consume the free spell buff?