New this build: a new render cells optimisation for large levels, and various other additions, changes and bug fixes - in particular an editor memory leak has been fixed, which could significantly improve reliability for certain projects especially during long editing sessions.
Render cells aims to bring a collision cells type optimisation to rendering the objects in the viewport. By entirely skipping objects far away from the viewport, it can speed up rendering on huge levels with thousands of objects. However in order to achieve this, it becomes slightly more expensive to move objects or change their Z order. Therefore it's disabled by default and can be enabled for individual layers where it's beneficial. Generally it's only suitable for large static layers. Don't just go ahead and turn it on without understanding it since doing so could actually reduce performance! Since it's a relatively complex implementation and involves trade-offs, it will be covered in more detail on Ashley's blog shortly.
Ejecta support is now deprecated
Ejecta is the last non-browser engine that is supported. Since it is not a real browser engine it comes with various bugs, quirks and missing features that are not a problem with all modern browser engines. As with CocoonJS Canvas+, it is very difficult for us to provide good support for non-browser engines, and we are keen to drop this last holdout. Performance on iOS 8 is excellent, with PhoneGap matching Ejecta and with the promise of a big performance boost to come when Cordova supports the new faster WKWebView. PhoneGap also supports many more features thanks to its browser-equivalent support. iOS 8 is already installed on 60% of devices just over two months over its launch, and we anticipate this will be the vast majority of devices within just a few more months.
Therefore we are deprecating Ejecta to encourage movement towards alternatives using real browser engines, in particular Cordova-compatible platforms (such as PhoneGap Build, the Intel XDK, or Ludei's Webview-based platforms). If you still need to use Ejecta, simply right-click in the platform selection dialog and check "Show deprecated exporters".