The new line of iMacs due early this coming year are likely to sport some pretty serious upgrades, most notably (we reckon) a quad-core processor and new NVIDIA chipsets. Of course, this more powerful hardware will be producing more heat, and if Apple wants to keep the iMac and Mini lines trim and svelte, they may be putting a bit of work into a new cooling system.
Apple is tapping Auras Technology for the cooling system; Auras makes many parts but has produced original cooling solutions like this one (looks cool) and may even be putting together a liquid cooling system for the new iMacs.