With thanks to Paul Howard, who mentioned it in the comments of the previous post:
Off Topic, but The Riven Shield ebook is up on Amazon.com.
I’m planning to wait until the series is completely available, but I thought some would like to know about it.
I know that Broken Crown was almost ready, and I believe the rest of the Sun Sword will slowly make its way into the channels in order; I asked that Riven Shield be processed first because the physical book is unavailable, which meant that the book itself was unavailable in any format.
At the moment, it appears to have propagated to two places: Amazon and iTunes; I’ll add links to the other ebook vendors when it appears on their sites.
Looking forward to Broken Crown.