Verizon's 4G LTE will launch some time in December yes. But this is for Mobile Broadband and will only be available in 38 cities nation wide and 60 airports. I can't remember where to look to find which cities and airports its going to be.
Verizon won't see a 4G LTE device till Q1 2011 (most likely this is all rumor and is subject to change at Verizon's discretion, so anythings possible). So if you're waiting for the HTC Incredible HD/Mecha, you probably won't see it till Feburary 2011.
The HTC Incredible HD/Mecha is supposed to debut at CES in January 2011 though (which is also just rumored).