If we go by the rumors running, the Microsoft Surface Tablet may be Wifi only at launch. However, Microsoft has not yet said that officially and have also not commented on whether there will be cellular version of this tablet available be out or not.
The rumors make sense seeing the fact that there no network provider till now has come forward to support this newly launched tablet. However, going by what Bloomberg has published, there won’t be any cellular version of Microsoft’s surface tablet. It is important to note here that Bloomberg does not differentiate between Windows 8 Pro and Windows RT tablet. Thus, it could well be that either of these two may come without a cellular version, whereas Microsoft may be planning out one for the other.