French based Parrot announced the world's first MMS photo frame dubbed DF7700.

With the Parrot DF7700 photo frame you can send photos via MMS from your mobile phone directly to the photo frame.
Inside the Parrot DF7700 photo frame is a SIM card with its own phone number. You would need to check with your carrier what the cheapest way is to get a card that is only used for getting calls.
Other features of the MMS photo frame include 7 inch screen, position sensor detects the orientation of the frame and automatically rotates the photos, USB connection, SD card slot, light sensor for adjusting brightness, and slideshow modes.

Parrot plans to ship the DF7700 to the U.S. by end of this year. It already ships in France.
Via the Parrot site. Shop for Parrot Products.