I have just had word from DAW about Riven Shield:
THE RIVEN SHIELD will be put out for distribution Friday, so that should
start appearing at vendors in the next ten days or so.
As I’ve mentioned previously, DAW, while being distributed by one of the ‘Big Six’, is actually a small, privately owned publisher, with the attendant number of staff. Getting new books into production, catalogues, and stores eats up about 140% of their time, and the other 10% (because no one expects to work in publishing at less than 60 hours a week) is left for things like digitizing the backlist.
Hunter’s Oath and Hunter’s Death have started to appear as ebooks in the wild. Riven Shield should join them soon, followed by Broken Crown and then the rest of the series in order.
When I realized Riven Shield was no longer available, I asked (where asked is the euphemistic form for ‘begged, pleaded, whined, cried, demanded’) that it be the priority in the Sun Sword universe, and I’m happy to say that it was bumped up in the “omg we have no time” queue.
ETA: Riven Shield will be available in ebook format; I realized that I had not made this sufficiently clear. At the moment, there are no plans in the near future to reprint it =/