New this build: new support for W3C-standardised web apps, an Alpha Threshold effect which can be useful for shadow effects, and other tweaks and bug fixes. In particular PhoneGap compatibility should be improved in this update. PhoneGap should be becoming increasingly useful in the near future: Android 4.4.3 already ships a GPU-accelerated canvas2d in the web view, meaning games should be a lot faster, and a future Android version should also add WebGL. iOS 8 will also add WebGL support and full JIT capability, making PhoneGap an all-round great solution for easily building and publishing games.
We're due a stable update so please test thoroughly and report any issues that you find! If all goes well, the next build should be a stable release.