The new edition of Fimbulwinter is now on Amazon, thanks to everyone who submitted corrections in the proofreading thread. The only changes in the new edition are typographical corrections, and a couple of minor changes to wording to make some awkward sentences flow better. But I hope this will provide a better experience for new readers.
If I understand how Amazon's update system works everyone who previously purchased Fimbulwinter will get the option to update to the new version once it goes live. The delay there is the same 12-24 hours as for publishing a new book, so if you want the new version you should see the update option sometime tomorrow.
Meanwhile, I've finished plotting out the sequel to Black Coven and will start writing the first draft this week. I'm tentatively aiming for a September release, but that could change significantly depending on how the writing goes. I should have a firmer date in a few weeks.
Finally, I'm curious whether there is any interest in a print version of my books? I'd have to use a Print on Demand service, which means they'd be relatively expensive (probably $8 - $10, depending on what kind of deals I can find). But I know some people like to have a physical copy of their books, and not everyone has a Kindle.