According to the tipsters, the 'refreshed' iPads would be equipped with the new lightning adapter and there is talk that they would be powered by the A6 chip that runs the Apple iPhone 5. When we told you about the possibility of a 'refreshed' model earlier, we mentioned that it would include LTE support for the U.K's newly launched 4G LTE network. The word now is that there will be global LTE support on the revised unit.
This wouldn't be the first time that Apple has revised the Apple iPad in the middle of its shelf life. This past May, Apple replaced the 45nm A5 chip on the Apple iPad 2 with the upgraded 32nm A5 and added 2 hours of battery life to the device.
source: 9to5Mac via Gizmodo