Since the new MacBooks can use six, obviously the new iMac will unofficially take six.
Is it true that the late 2008 iMac handles 6Gb?
It says 4GB in Apples site so.../QUOTE]
...that's absolutely meaningless. Apple has been artificially limiting the amount of RAM since the days of the Macintosh SE/30 in 1989 (Max RAM: 32MB according to Apple, 128MB in reality).