there is another thread on the forums where someone is discussing this. Last I heard, there is one under development. It is unclear what stage the device is in. The guy building it isn't taking investors or anything, so information is limited to what he decides to reveal.
We are most likely have fpgas shipping in under 4 months. But I cannot get any more accurate than that for now.
would you be able to give any ranges in price or hashing expectations? also are FPGA Boards Standalone (meaning No need to get a motherboard/CPU/Ram/HDD/etc.)