Its now offical [via]

if we go by specs , ps3 is better than the Xbox 360
but sony wouldn’t settle for a ” better ” it seem , they are going for the kill

while Xb0x 360 backwards compatibility is still rumors ( nothing is confermed )
sony says that ps3 is firmly compatibile

CD PlayStation CD-ROM, PlayStation 2 CD-ROM, CD-DA, CD-DA (ROM), CD-R, CD-RW, SACD, SACD Hybrid (CD layer), SACD HD, DualDisc, DualDisc (audio side), DualDisc (DVD side)
DVD: PlayStation 2 DVD-ROM, PlayStation 3 DVD-ROM, DVD-Video, DVD-ROM, DVD-R, DVD-RW, DVD+R, DVD+RW
Blu-ray Disc

and its blu-ray !

and the fact that it use most memeory on the market is good also

USB Front x 4, Rear x 2 (USB2.0)

Memory Stick standard/Duo, PRO x 1

SD standard/mini x 1

CompactFlash (Type I, II) x 1

notice how memory stick ( the one used in nearly most sony products ) is there ? thats good for them
because that what would be called cross product sales

speaking of cross product sale
Sony has the change to do what Game Boy Advance link with Game Cube did before
Link UP ! since both share USB 2.0 and Wi-Fi which could enable the psp to interact with ps3

game that were shown are
Devil May Cry 4
Fight Night 3
Spider-Man
Getaway PS3
Warhawk PS3
Tekken 6
Killzone 2 (working title)
Gran Turismo 5
Final Fantasy XII
Red Dead Revolver 2 (working title)

Games Confirmed
Heavenly Sword
Metal Gear Solid 4

pictures from file rush news

much work for Nintendo to try and do better than both sony P3 and Xbox360 , but with the rumors of IBM & ATI working on next Nintendo consule , i expect to get something great !

Gamespot has videos on it [link]