There are future plans for an official NI released driver for 2.4x kernels but no timeline has been specified. Your best source of information on any releases can be found at: http://www.ni.com/linux
Count me as another waiting for the driver. I just found out the hard way the current driver won't work with RH 7.1. If you want a beta tester I am available. I am linking my own code to the driver for use in linux based ATE.