Well this turns out to be a lie.
I just got done talking to two different verizon stores and not one of the employees heard of this plan for us. So as of now, until anything is given to me in written form I am still sticking with my plan.
No.
Individual Verizon reps may not know everything, in fact I usually expect them not to know anything. The plan is as true as it could be. This is based on leaked training materials, numerous conversations with reps and even official company twitter posts. Of course eventually Verizon will get you off the unlimited plans, whether it happens at 4G->5G transition or for some other random system change is not known and probably not knowable as the exec-level company decision has not probably been made.