I just looked it up on VZWs site, its either a $30 or $50 credit, depending upon your plan.
EDIT: If youve been in for a while, you could be grandfathered in for a $50 or $100 credit.
"You can check your New Every Two eligibility by signing into My Verizon. If you were enrolled in the program on February 15, 2009 or later, you are eligible for a credit of up to $30 or $50 depending on your plan, with a two-year renewal. If you were enrolled prior to February 15, 2009 and continue to meet the requirements of the program, you will qualify for a credit of up to $50 or $100, depending on your plan. In either case, you will be able to redeem your New Every Two credit one more time for an upgrade for up to six months from the New Every Two Redemption Date. After that time, you will not be re-enrolled. "