It is possible both carriers had made deals to provide wireless service earlier in the week, however some last minute changes may be related to business decisions and have little to do with technology limitations.

The two analysts spoke separately with Computerworld on the condition of anonymity, which may indicate the carrier situation is probably volatile and could change before Apple's expected tablet announcement next Wednesday.

Additionally, the device is only expected to be announced that day, and any internal components could be altered prior to its initial shipment a few weeks later.

Spokesmen for both the carriers said they would not comment on the issue.

Analyst Jack Gold, of J. Gold Associates, said he thought it makes more sense for Apple to have as many carriers on board as possible to increase reach and sales, and AT&T and Verizon each have more than 80 million customers. "Apple would be nuts to not have as many carriers as possible," Gold said.