The first round of beta testing has been completed and on the same day id Software announced the date for the new round to begin. The second closed beta test starts on April 13th with no start time or beta test duration disclosed. id have also announced that a new wave of beta invites will be sent out prior to second beta start, so everyone who didn't get in at start here's your chance. For those of you who already have beta access, you do not need to sign up again as the beta works on "get in once, stay forever" principle.

Source: Quake Champions Twitter