PlayStation.com forum user StalkingSilence found more hidden information on SCEE's website regarding the upcoming PlayStation Day on May 6, 2008. The event page set up for the site, but currently not linked to anywhere else, displays several games related to the invite-only press event.
"Sony Computer Entertainment Europe prepares to reveal a host of key content coming in 2008."
Keynotes:
> Kaz Hirai - SCEI President
> David Reeves - SCEE President
Related Games (taken from Event page):
> Crisis Core Final Fantasy VII [PSP]
> Resistance 2 [PS3]
> Secret Agent Clank [PSP]
> SingStar Vol. 2 [PS3]
Updates:
Location announced: indig02, London
Website: http://www.theindigo2.com/