Samsung Galaxy Note users can already use multi-window technology, but that feature isn’t available to owners of other smartphones. However, that could all change very soon as an AOSP framework Code Commit was found in Android 5.1 that refers to a feature that allows users to split their display into two halves with a different app running in each half. While nothing else is know about this feature, Google I/O 2015 is in a couple of months and we’re sure to learn more there, assuming Google doesn’t reveal anything sooner.