I finally got Amazon to send out an update notice to owners of previous editions of Sunrise, which allows them to download the 4th edition of book (published in Oct 2012), which incorporates the novella, Radiant Burn.
I asked them to do the same for Starlight, since the most recent edition incorporates the novella, The Best of Times. I have my fingers crossed but I’ll keep after them. Owners of previous editions of Sunrise who wish to download the new edition can go to Amazon and select My Account > Manage Your Kindle and click on the update link next to the title in their kindle library. Enjoy!