According to http://www.neogaf.com/forum/showpost.php?p=20404976&postcount=1777 user lherre, a new Gran Turismo 5 PS3 demo is rumored to be on PSN, but unfortunately for GT5 fans it's not currently available to the public audience.
To quote: "This member has impeccable credibility and this demo is definitely available on PSN, though it may only be available for a select group of people at the current time.
lherre later states that this demo may be used for media events only, but that is speculation on his part, as of now.
With this demo uploaded on PSN, could we be seeing a new GT5 demo in the relative future? Let's hope so since we haven't had a new demo since last Fall when we had the Time Trial demo, which gave us small tidbit of what to expect in the full release."
Finally, a release date for the title is slated as 2010, so the wait for a full release is still unknown.
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