A Chinese company called Lavi can sell you an iMAc before the real deal is even out, obviously don`t expect Mac OSX to be included.
.This fake iMac is called the LAVI S21i. It has an aluminum enclosure. At its very thinnest point it`s just 0.9 cm thin. It has a built-in HD camera, WiFi connectivity, four USB 2.0 ports, a VGA port and a LAN port. Also on board a 21.5-inch 1920×1080 display, 4 or 8GB RAM and Windows 7/8. You can choose either a 3.3GHz Intel i3 dual-core CPU or a 2.9GHz Intel i5 quad-core CPU, a 500GB hard drive at 5400 RPM or a 128GB SSD. Oh yeah, it`s also half the iMac`s price.
i wonder what the warrantee is on this thing. i`m sure if it breaks you can just book an appointment at your local Lavi store for service and support.
more here and here