Apple appears to be planning to announce the latest version of its tablet computer in the first week of March.
Whether other carriers will also sell the device isn't clear, but Sprint Nextel does not yet have its LTE network built, T-Mobile USA has no spectrum to do so, and Clearwire, though planning to build an LTE network, will operate only in wholesale mode, so won't be selling handsets to end users Verizon, AT&T to Sell 4G iPad
AT&T and Verizon Wireless are the only two U.S. carriers that currently sell the iPad, and are also the only two that already have operational LTE networks.
Of course both AT&T and Verizon Wireless would have argued for exclusivity, at least for a period of time, as that has proven to be a viable selling point in the mobile market. The iPads and other tablets do not absolutely require a mobile connection to work, of course, but service providers obviously hope that more consumers will choose to buy such access.