Works with the following models:
- 24-inch iMac (aluminium and glass)
- 27-inch iMac (late 2009, mid 2010, and early 2011)
- 24-inch LED Cinema Display
- 27-inch LED Cinema Display
- 27-inch Apple Thunderbolt Display
Note: Not compatible with iMac (late 2012). Wall mount or articulating arm not included.
these specs are from the Apple store....
From what I've read online ... there is news that some companies are working on some sort of mount for the newer 2012 iMac's that would involve using the existing iMac stand in to the stand assembly (because the new 2012 iMac stands are not removable).
"... however, third-party companies such as ErgoMart and iMacMount.com offer adapter kits for these iMac 2012 smaller models. iMacMount offers a $79.95 kit for 17-, 20- and 21.5-inch models. The company's site says its current iMac Mount VESA Mount Adapter Kit supports the now problematic Late 2012 21.5-inch iMac
I'm sure Vesa will take this same "mount adapter" approach eventually, for the newer 2012 iMac's.