Former beta testers who never purchased a copy of Elder Scrolls Online are being welcomed back this weekend to try out the new Tamriel Unlimited, the buy-to-play version of ESO. Starting today, Thursday, April 16th at 10:00 am Eastern / 7:00 am Pacific and running through Monday, April 20th at 10:00 am Eastern / 7:00 am Pacific, the invitation is extended.