Microsoft has finally revealed Windows Server 2012 Editions.There will be total four editions.
Datacenter edition for Highly virtualized, private & hybrid,loud environments.
Standard edition for Low density or non-virtualized environments.
Essentials edition for Small business environments.
Foundation edition for Economical general purpose.
The pricing ranges starts from $425 for essentials to $4.809 for the Datacenter edition. The Foundation, has no price and it is just for OEM only.