Courtesy of ToyArk.com, via TFW2005.com:
New details have emerged about the exclusive to MattyCollector.com Voltron Classics toy line:

I was able to ask one of the Mattel reps about the new Voltron Classics line. I learned that it is coming in about 5-6 months, each lion will be around $30 each, with diecast parts, spring actions, articulated figures that fit in each lion, sold on MattyCollector.com, and fully combined into Voltron is over 2-3 feet! Also, each will come with a part to build the blazing sword!
2-3ft Tall and Diecast!?!
I... Ho... WOW!