According to the information posted by VZW in Q7 at this link:
4 G upgrade
7. Do I have to change my plan once I upgrade my Motorola Xoom™ to 4G LTE™?
No, you will not have to change your plan when the 4G LTE upgrade is complete.
I assumed this means that we get the same plan we are on but the speed is 4G.
On the motorola forum someone posted that this means:
"VZW tells me once the Xoom is upgraded to 4G, we will be shifted to the $50 4G plan anyway. Or I could choose to keep it as a 3G device on the $35 plan."
Motorola forum link==>: https://supportforums.motorola.com/message/364009#364009
Comments are appreciated on this topic.
Jim Kirk