I had followed this thread with some interest, since I have an Alesis Masterlink which works well but the A/D and D/A technology was getting a bit old and I thought that new converters might be the best way to upgrade the sound. This past spring, I ordered the TI PCM4222EVM. It turns out that the PCM4222EVM has been back-ordered for at least four months.
The information I have gotten from TI is that they expect it to be available in the fall. This might not be a bad time to order these if anyone else has an interest.
Galil
-