From the release:
THE RIVET WARS EDITOR PACK IS LIVE. We are excited to announce that we are releasing a scenario editor pack for Rivet Wars. Now anyone will be able to create a great looking scenario for Rivet Wars: Eastern Front. Everything you need to get started is located on the Rivet Wars Scenario Editor Page.
Special thanks go out to Tom Hill for his great work on this project. Tom, Ted and Cool Mini are committed to continuing to improve these tools and support the community's creative efforts. In the future we plan to run contests and reward players for creating great scenarios that the community can enjoy.
We hope to see your work posted in the forums as well as any questions you may have as you work with the editor. Now anyone can make it more fun to Get in the Fight!