While maybe not the biggest change in Android N, Google announced a few interface changes to app switching that were particularly well-received during the I/O keynote. A couple of them had already popped up in the Developer Previews, but the keynote serves as confirmation that they will make it to the final builds. A change that is new to all of us is that there will be a reduction in the number of apps shown in the recent apps UI. Anything that hasn't been used "in a while" will be hidden from the user.
This, Google says, is because their user research showed that over 99% of users never accessed an app further back than 7 in the recent apps UI.Read More