Not yet unfortunately. There is a company called
ACube Systems that has an end of Q1 release target for one of their boards. A lot of people are hoping that they'll meet it.
Troika are supposedly still working. They have a new board nicknamed Panda which is in the hands of one of the OS4 developers.
I really hope that someone manages to get a license to get OS4 onto something based on
this eval board. It's got a dual-core 2.0 GHz PowerPC processor on it and uses modern standards such as DDR2 and PCI-Express.
Hans