Dual HDD with "fusion drive" modelIt seems the fusion drive consists of 128GB Flash on that SATA Port wich is not soldered to the board in the teardown...
Antwoord op "What will be the 3 TB drive size? 2.5 or 3.5?"I Suppose in the 27" iMac it is 3.5" There is enough space and it looks like 3.5 in the graphic from the Keynote. In the 21.5" Model there is no such option, so there just is no 2.5" HDD with 3GB at all.