Well there are threads for mini and ibooks, but they all don't indicate an imminent update. So Paris expo is the perfect time for updates.
According to http://buyersguide.macrumors.com/ we will seePowerbook, iBook and mac mini. What we MIGHT see is updates for: xserve, Powermac.
What we won't see is intel macs, perhaps devkits but that is all. Apple has agreement with IBM and freescale till the end of 2007 for PPC's.
What I think...