Some info from someone who works at NEC: http://www.hardforum.com/showthread.php?p=1029653642#post1029653642
The less expensive LED is still in the product development stages over in Japan.
The pricing for the 26 and 24 inch models with the improved CCFL's are below.
LCD2690 = $1450
LCD2490 = $1250
NEC does not have any plans for a 20/21 inch wide planned with the new CCFL's.