http://www.tomshardware.co.uk/thunderbolt-hdd-blu-ray-dock,news-38812.html
It also has Gigabit Ethernet. Obviously direct BR play back will not be possible in OSX, but there are ways around that.
In fact, there may be much more in this docking station that you would normally expect.
The Sunix Pili integrates a 3.5-inch HDD enclosure, it includes a slim Blu-ray writer, four USB 3.0 ports, a multi-card reader with support for SD, MMC, MS, an xD media, and stereo audio playback using the SPDIF digital audio interface. And yes, there are dual Thunderbolt ports with daisy-chaining capability as well.
Sunix said that the Pili will be available in Q4, but did not release pricing information.
It also has Gigabit Ethernet. Obviously direct BR play back will not be possible in OSX, but there are ways around that.