I'm waiting for a new motu 2408 drive for Mac OS X at 1 year. Do you know, when I will can use Logic, Motu 2408 and Mac OS Jaguar togheter?

in order to protect your investment, it's a good idea to sell it off.
you can sell it right now for the price of an 828, or upgrade to 2408 mk3, or one of a large range of alternatives!
the pci-324 will no longer be supported. backwards compatibility with the 2408 mk1 & 2 however, will.
time to move on...