heh, awesome. I love Kojima.
Analyzing the frame.swf source code:
There will be 5 "keys" revealed in 5 dates:
5/18/2009: http://www.konami.jp/kojima_pro/next/img/key_eah.swf
5/22/2009: http://www.konami.jp/kojima_pro/next/img/key_ebb.swf (not yet uploaded to the website)
5/27/2009: http://www.konami.jp/kojima_pro/next/img/key_ebg.swf ((not yet uploaded to the website)
5/30/2009: http://www.konami.jp/kojima_pro/next/img/key_ebi.swf (ot yet uploaded to the website)
6/01/2009: http://www.konami.jp/kojima_pro/next/img/key_fa.swf (not yet uploaded to the website)
There is a loader swf for each key.
The programmer was smart enough to use a external source for the current time instead of using the viewer system time. (http://www.konami.jp/cgi-bin/server_time.cgi)
Maybe the loader for the next key will change the weather in the frame.swf