"VS Customer Preview" that can only refer to the Microsoft Virtual Server Beta which we reported on here a week ago.
People were invited to sign up at BetaPlace using the guest ID: vscp.

sign up :
hxxps://www.betaplace.com/betaplace/sign-in/betaplace.asp?refURL=http%3A%2F%2Fwww%2Ebetaplace% 2Ecom%2Fbetaplace%2Fcontent%2Fbphome%2Easp%3F