I forwarded this question on to Loki, and here's the response from Scott Draeker, president of Loki Games:
As you can imagine, everyone is pretty busy right now, especially as we had some folks out on vacation the last couple of weeks. So I'm sorry about the slow response.
In answer to your question, work on OpenAL continues. Creative has already added EAX and hardware acceleration to the Mac and Windows versions, and are working on adding both to the Linux implementation as well. Work is also continuing on an OS X port as well as other OSes. OpenAL continues to be the sound API which Loki uses in all of its products, and many other companies are either using or evaluating OpenAL for their products as well.
Hope that helps.
So there you have it, straight from the source. Development is progressing, although it's likely to be a bit slow at present. Here's hoping we'll hear more updates on the progress of OpenAL, over the next 6 months. Thanks a bunch for taking the time to answer, Scott!