Bob Vandette, Mobile Architect at Oracle, proposed a new project that would focus on porting OpenJDK to the major mobile platforms—Android, Windows, and iOS.
According to Vandette, Oracle is willing to invest substantially into the project. He cites:
- The equivalent of Java 8's compact2 profile (but as Java 9 modules)
- iOS x64 and arm64 (arm64 via the Zero no-assembly pure C++ interpreter)
- Android x86 and arm (32-bit with JIT enabled)
- Windows 10 x64 Surface Pro
- JavaLauncher helper interface (to simplify including Java in Mobile applications)
(source: Ben Evans)
Though at this phase, the proposal would still have to be confirmed by OpenJDK, there seems to be a good amount of support. While it has seemed that Android would be the market standard for Java developers, Oracle making a concerted effort would give core Java developers an avenue to develop for mobile.
You can read his full proposal here.