There's a lot to look forward to in Android's next major update, but hardware nerds are focusing in one one key feature: official support for 64-bit mobile chips. It's the mobile OS' inevitable future, and chip-makers have been preparing for it for quite awhile. Now app developers can jump in, too: Google announced today that a x86 64-bit Android L developer preview emulator image is available for developers that want to take their apps to the next generation. Not every dev will need to rebuild, however -- apps built in Java will automatically benefit from the 64-bit release's increased accessibility to memory and registers. Choose another language? Well, you'll need to recompile: head over to the source to start testing your apps in 64-bit.