That link isn't back just yet. from the document:
The host processor on the Intel® Edison development board is connected to a Broadcom* BCM43340 combo chip via UART (uart0 mapped to /dev/MFD0) as transport layer and uses additional GPIOs to handle power (on, reset, etc.), OOB (out-of-band) signaling for UART to support low power mode.
Profiles provided by BlueZ HID 1.0 and PAN 1.0 have been validated in Release 1 (current ww42 image)
A2DP 1.3, DI 1.3 SPP 1.1 were being planned for Release 2 (TBD DEC 2014)