We're officially changing the guidance from "Teams of up to 500 users" to "Teams of up to 2000 users"!

New results are in on TFS scalability, and showing reliable performance for 2000 users on a Team Foundation server configuration, which is made up of a 2 proc application tier and a 4 proc database tier.

Combining this new scalability result with TeamPrise allows TFS to be positioned as a single repository for the enterprise.