Changes

In Firefox Desktop, the first half of the year will bring [[multi-process][https://wiki.mozilla.org/E10s]multi-process] to the general release for the very first time. Test Pilot will be relaunched as a way for release channel users to opt into experimental features for rapid iteration and feedback. One of these features will be the [[Activity Stream][https://mozilla.invisionapp.com/share/GA5RW90CW#/screens]Activity Stream] (placeholder name) which is a searchable, more powerful view of user history.