Apple has just confirmed live from today's iPad event that the iPad 3 will indeed have support for LTE. iMore recently reported LTE capabilities as confirmed by one of our sources as well. LTE will support the following carriers in North America - Rogers, Telus, Bell, AT&T, Verizon.
iPads equipped with 4G are showing up in Apple's inventory ahead of the iPad 3 event according to a 9to5Mac source. This would mean that 4G would not only be for US models, but international models as well. This lines up with our recent prediction that the iPad 3 would indeed be equipped with LTE.
The same source that originally told iMore Apple would be holding their iPad 3 event on March 7 has now let us know that the announcement will in fact include 4G LTE networking. We'd heard previously that 4G LTE would be coming to iOS in 2012, but not whether it would make the cut for iPad 3, or whether Apple would save it for iPhone 5 in October.
It looks like Best Buy is trying to offload some iPad 2 inventory on their internal employee auction website ahead of the iPad 3 launch, which is expected to be announced on March 7th with a high-resolution Retina display, quad-core processor and possible 4G LTE support.