Bandai just posted this news of an MMPR exclusive for SDCC 2013 on their Facebook page:

Glad to see our fans are on top of it! And now…
Mighty Morphin Power Rangers fans, be the first to own the Legacy Power Morpher in a Green Ranger / White Ranger Edition! This Limited Edition is 24 Karat Gold plated and comes with two Diecast medals.

Available exclusively at the Bandai America booth # 2813 at San Diego Comic Con, July 18-21, 2013. Limited quantities available each day. Only 1000 produced and individually numbered. Visit www.bandai.com/convention2013 for more information. (Website not yet active as of this posting)