i don't know anything. but i guess someone will post it in the news if BT boards are ready.
in the meantime... i wonder if anyone had success using available bluetoothmodule on a separate shield. there seem to be quite a few cheap BT modules. ROK-101008 from ericsson features an UART interface.
anyone knows what one could expect trying them? they even support streaming audio both way. if one could control this with arduino i imagine great "standalone" (no wires) projects. http://www.tik.ee.ethz.ch/~beutel/projects/datasheets/ericsson/ROK_101_008p3b.pdf
come on you more skilled!