Microsoft has begun to send out invitations to a private press event hinting that a smaller Surface Mini tablet may be the topic of discussion on May 20th. According to the invitation, Microsoft is asking media to join it for "a small gathering."
Though no mention of a Surface Mini was given, the invitation did bear "Microsoft Surface" branding. We can take that as a clue, along with the "small" wording, that a smaller Microsoft Surface Mini tablet will be joining the most recent Surface refreshes, including the Surface 2 and Surface Pro 2.
Rumors of a smaller Surface tablet have been going on for some time now, and a smaller Windows 8.1 tablet may help Microsoft compete better with Apple's iPad mini and a number of 7- and 8-inch Android tablets, including Samsung's Galaxy Note 8.0 and LG's G Pad 8.3. There are also a number of Windows tablets currently from Asus, Acer, Lenovo, Dell, and Toshiba that sport the smaller form factor, but none officially from Microsoft's official Surface product line.