In their Windows Server R2 Upgrade Paths document, Microsoft indicates the following about cross-edition upgrades: However, it looks as though dism can be used to upgrade editions. See this Technet blog post for more details. Please note that the blog indicates this upgrade cannot be performed on a Domain Controller. Display current edition: Current Edition:
File Services — limited to 1 standalone DFS root. When comparing Foundation and Standard edition, note that in Standard edition we have a Hyper-V role available. However, we have Virtual Image Use Rights for the host physical instance and 1 virtual machine.