PS3 game zones
Did this zoning business begin with the PS3 slim? but the copy of little big planet had a sticker talking about some deal that finished in January so I am not sure the game zone noted on the back is a new phenomena.
Personally I hate zoning as I believe it is anti competitive as it is a restriction on trade.
P.S. Im guessing your region 4 you must be japan if Im not mistaken