No answers here, but a suggestion. I doubt you're going to get any real deals from them on a tablet, as a tablet would only add $10 to the cost of your shared plan if I remember right (I didn't go to the site to check just now, I'm going from memory, and could be wrong), so they're not going to recoup a whole lot... I could be wrong, but that's just my thought on the subject. I'd watch for a deal on amazon or at Fry's or Tiger Direct - someplace like those. Use the tethering in your phone instead of adding the cost and battery drain of a LTE radio to your tablet, and the cost of adding it to your plan.
Just a thought.
There is also another option if you must be connected to your wireless. Purchase a USB modem for your tablet. VZN has 4 listed on the site, all 4G. It is $10 per month for access. If you decide to go this route, make sure the tablet you purchase has a USB port.
I have ordered a Win8 tablet, and just plan to use my Trophy as a hot spot. Unless I decide I need to connect faster (the Trophy is 3G).
Until Verizon and Microsoft strike a deal, you get a cheap Android Tablet on Ebay,
and wifi off the Android Tablet with your Windows 8 tablet until then.
That is what I do, It still looks like for the next decade, we will not be able to dump our Windows
computers. LOL. The new Samsung Windows Tablet looks pretty good today at Office Depot.
I have the Samsung Android 7" i800 which works pretty well too.
Next suggestion is to get SplashTop app for your android tablet and devices.
I am using this which basically turns your Android Tablet into a Windows computer.
This is sweet. I love it. You can run any microsoft right there on your android phone and tablet.