I checked with taobao agent "Michael" and he said that the red switch PLU won't be in stock until mid June. Same info from here, in Chinese, first post, IM conversation:
http://www.pcwaishe.cn/thread-172129-1-1.html In the conversation, the seller said if pre-order now, it comes with 8 red keys. Probably WASD plus something else, maybe arrow keys, but the seller didn't specify.
Also, on the fifth post, pp2310338 said there is a rumor that KBC will release 2 new keyboards, 104 and 107, with user-changeable or configurable lights (LED?).