Beta Players Invited to Return

Zenimax and Bethesda are inviting Elder Scrolls Online beta players back to Tamriel during a special event running from Thursday, April 16th through Monday, April 20th. During the event, beta players who never purchased ESO will be able to come back and check out the massive number of changes since the earliest stages of the game and the new Tamriel Unlimited B2P version.

Former beta players should keep an eye on their email for a special communication about the event.

Source: Elder Scrolls Online main site