VisualEditor/Rollouts/English Wikipedia

Experiment
All stages offered the visual editor to 50% of users.
 * Pilot started: 2015-05-21, 15:00 (gerrit)
 * Pilot ended: 2015-05-22, 15:01 (gerrit)
 * Bucketing started: 2015-05-28, 23:04 (gerrit)
 * Bucketing ended: 2015-06-04, 23:28 (gerrit)

New users
Stages of the incremental roll-out of the visual editor to new users.
 * 5%: 2015-07-28, 15:03 (gerrit)
 * 10%: 2015-08-04, 15:13 (gerrit)
 * 25%: 2015-08-13, 23:03 (gerrit)
 * 50%: 2015-08-20, 15:25 (gerrit)
 * 100%: 2015-09-01, 15:03 (gerrit)