You can read the full announcement about Vintage Masters on the Magic Online website, where Hall of Famer and Wizards employee Mike Turian dives into it and explains what the set will be, what it will cost, and when to expect it!
Join the discussion about the product with the Twitter hashtag: #MTGOVM.
Set Name: Vintage Masters
Magic Online Prerelease Events: June 13-16, 2014
Magic Online Release Date: June 16, 2014