First, The Magic Ring is now available for preorder at Amazon.com, Amazon.co.uk, and Amazon.fr. It is still available for a 10% preorder discount from the publisher at Valancourt Books. Valancourt Books will have it for sale, and I will be signing copies, on July 1 at The Gathering of the Fellowship.
And second, here is official news regarding the release of my next book:

"At least I know I'm bewildered about the really fundamental and important facts of the universe."
-Terry Pratchett, Equal Rites