This might've been mentioned earlier, and if so I apologize.
You will NOT be able to apply your New Every 2 to this device because it will NOT be available through Verizon, but rather only Google. If google offers a discount, it will be ONLY for new Single line activations (no family plans) or a slightly worse discount ($100 or so) for upgrading customers willing to move to their preselected plan. You will not be able to switch back to your old plan (for at least 6 months) either, or Google can charge you the equipment recovery fee.
This is assuming you can get it at ANY discount, which there is no confirmation you can do this
In short, if you want to keep your current plan, you will need to buy it at Retail (529 or whatever it ends up being).
Remember, this ISNT a verizon phone that Google is selling. This is an UNLOCKED google device (it should be just one model for sprint/verizon/otherCDMA) that is compatible with verizon's network and that Verizon is authorizing to activate on their plans.