Yes, you read the title right the new Apple iPad will be 4G/LTE! The iPad 2 has 3.1Mbps on EV-DO, 7.2 on HSPA. The new iPad will now has 21Mbps HSPA+ and DC-HSDPA at 42Mbps, with LTE taking the cake at 73Mbps. Verizon, Rogers, Bell, Telus and AT&T will be the LTE partners.
There will be two different versions built in the US for Verizon and AT&T. The new iPad can also be turned into a mobile hotspot if the carrier supports it.