While there is still time, the current Humble Bundle, the Game Making bundle, which contains 22 programs, including Stencyl which uses Haxe and OpenFL under the hood, is available in the bundle with an included Indie subscription worth $99.
If you're new to Haxe and OpenFL, or just need a refresher, Lewis Lepton has created the OpenFL Know How Wiki, a “place for anyone to learn & bone up on knowledge of Haxe/OpenFL”.
Ian Harrigan tweeted a couple of previews for HaxeUI v2 which can run on either OpenFL or Flambe using the same .xml definition. Ian has also created a binding demo which you can try, based on HaxeUI v2 code.
Maybe a backend which could be added to HaxeUI v2, Kha, by Robert Konrad, who has made Kha available for download through HaxeLib. Robert has written a post about Kha on HaxeLib giving you a brief intro, as well as some known issues and future plans.
If your interested in Kha, Lubos Lenco has finished his Haxe and Kha 3D Guide, a set of tutorials which teach you how “to use modern, cross-platform 3D graphics API provided by Kha”.
David Mouton has released HaxeLib.js, which he spoke about at WWX2015, an NPM library which currently contains 20 libraries ready for use in your projects.
Slava has tweeted a preview of Postfix Code Completion, an in-progress FlashDevelop plugin which works with Haxe, with the alpha release coming soon.
I'll finish this weeks roundup off with a post from Jim Truher, a technical postmortem of his Slow Jam 1 Game in which he uses Luxe, which he says “is completely badass”.