So... once/if my contract with VZW is renewed, will this cap take affect? I don't recall receiving notification of this change to my current service... nor is it advertised as such under the My Plan section of the VZW web page.

The Data Plan on my monthly statement is advertised as "Unlimited"
The Broadband Connect Plan (Tethering) on my monthly statement is advertised as "Unlimited"
Nowhere is there a mention of 5GB.