I've mentioned it on the Latest News page, but that's ephemeral, and the blog archives itself. In case you missed it elsewhere:
Isabella, The English Witch, Viscount Vagabond, and Knaves' Wager are now available for your listening pleasure. The Devil's Delilah and The Sandalwood Princess are in production and should be available sometime this month.
Meanwhile, we're working on getting the Carsington series into audio format, too. (Yes, and the eBooks in Australia & New Zealand before too long, we hope, we hope!)