It's all about WiMAX now since it is the first 4G system to be commercialized, but anyone with enough sense can tell you that the future is LTE and Nokia will be right there with you.

Nokia LTE

Nokia has created the RD-3 internet modem which supports GSM/EDGE, WCDMA/HSPA and LTE (Long Term Evolution), it is ready for use right now but not by people like me and you. The modem has just come out of its first trial so you can expect this thing to be used by huge companies along with network providers whom will be supporting LTE.

On paper LTE is said to be faster than WiMAX, but that doesn't matter right now because WiMAX is here and LTE is still trying to figure out the best way to come out of the closet.