Just to help you keep all your dates straight, I put together this nice little list.

Jul 2005	Sony ships 450 evaluation units.
Aug 2005	Sony ships 200 evaluation units.
Sep 2005	Sony ships 300 evaluation units.
Sep 7-11, ’05	CEDIA Expo 2005 (for Blu-ray related info)
Sep 16-18, ’05	Tokyo Game Show
Oct 22-30, ’05	Akihabara Entertainment Festival
Oct 2005	Sony ships 3000 evaluation units.
Nov 2005	Sony ships 3000 evaluation units.
Dec 2005	Reference Tool Release
Jan 5, ’06	CES Keynote Speach by Howard Stringer, Sony’s CES 2006 Website
Feb 2006	PlayStation Conference (never happened)
Feb 16 – 20, ’06	Taipei Game Show
Feb 27 + 2006	Destination PlayStation (Developer’s Conference)
March 15, 2006	Sony Press Conference
March 22, 2006	Phil Harrison Keynote at GDC This is my realtime GDC coverage.
May 8th 2006, 4pm	Pre-E3 Press Conference
Sept 22-24, ’06	Tokyo Game Show
November 2006	PS3 Launch in Asia, North America, and Europe