The difference this year being that you can enable the multi-window feature in the M Preview. See: http://www.androidpolice.com/2015/05/29/android-m-feature-sp

The difference this year being that you can enable the multi-window feature in the M Preview. See: http://www.androidpolice.com/2015/05/29/android-m-feature-spotlight-multi-window-well-kind-of/ http://www.androidpolice.com/2015/05/29/android-m-feature-sp...