There is some potentially interesting information floating about. According to Paul O’Brien from MoDaCo, ASUS and Google are already in production of a 3G version of the Nexus 7. The current hardware will remain the same, but it will include the ability to connect to your mobile carrier. Details on if they will be SIM only, unlocked or contracted to carriers who wish to sell it are still unavailable. Claims do say that the new 3G enabled Nexus 7 tablets should be announced, and possibly launched in the next 6 weeks.
The real question is “does it matter”. Have you been holding out on your purchase because you wanted one that would go more places and that you could add to your account? Hopefully with the small modification it won’t effect the price tag much if at all. If the carriers are gonna get involved and start peddling them at stores, then we could see a whole host of price tag variances.