Asked how GWT's future relates to Dart, Cromwell said the technologies are on orthogonal paths. "In other words, Dart's not replacing GWT or vice versa." But Cromwell said he did not know if GWT would ever compile to Dart. That is a matter for speculation, he added.
Java 7 and 8 will be supported in GWT 3.0, with all Java 7 language features available. Project Lambda capabilities in Java 8, which would benefit programming for multicore processors, would be accommodated once Oracle releases Java 8, Cromwell said. Also eyed for version 3.0 will be better reporting and profiling tools to spot performance problems, as well as improved CodeSplitter capabilities.
Google also intends to close out 100 top bugs in GWT and improve speed and reliability of GWT unit testing, Cromwell said. Deprecated code will be deleted in the upgrade. Support will be removed for versions 6 and 7 of Internet Explorer. Prior to the release of GWT 3.0, Google in the fourth quarter of this year plans to release GWT 2.6, described by Cromwell as a minor update.