Premium Bandai published a new page on their website teasing the Ranger Key Set 2000th Edition.
The page itself features no actual text, and just shows an image featuring Gokai Red and Zyuoh Eagle. The text on the image states “We have come to steal the legendary treasure!” with additional text showing that more information will be revealed on September 12th, 2016 at 11:00AM JST.
Aside from that singular image, no other information is given at this time. Which Ranger Keys are included, how many are included, when it will debut, and how much it will cost will all (hopefully) be revealed on the 12th.
Source: Premium Bandai