A Super Dev Mode capability in GWT 2.5 allows for fast refreshing and compiling to JavaScript in seconds. Source-level Java debugging and mobile browser debugging are featured as part of Super Dev Mode as well. The upgrade also includes Elemental, an experimental library providing lightweight, to-the-metal Web programming. It is primarily targeted at mobile development and leverages HTML5. A final version of GWT 2.5 is expected in less than a month. GWT downloads can be found at

In addition to maintaining GWT, Google has been developing its , which shares a GWT goal of enabling structured Web programming, but Google is not replacing GWT with Dart anytime soon, Cromwell explained. Support for GWT will continue and developers should continue to use it, he said. He expects the GWT steering committee to ensure GWT has a healthy future. GWT was first released in 2006.

in InfoWorld's Application Development Channel.