For #10, this is one week later than DC announced last week - for a cumulative nine weeks past its originally-solicited March 27 release date. Doomsday Clock #11 was originally solicited to come out May 22, but this week DC has pushed it back 12 weeks.
When first launched, DC planned for Doomsday Clock to run monthly from November 2017 to December 2018, with March and August as planned skip-months. After #2 and #3 were rescheduled, Johns announced in January 2018 that series was going bi-monthly
Subsequent Doomsday Clock issues continued to be solicited and then rescheduled. Doomsday Clock #12 has not been solicited for release, however a hardcover collection of all 12 issues is listed on Amazon for a November 26, 2019 release.