Boost 1.89 was released on August 13th. https://calendar.google.com/calendar/u/0/event?eid=XzhkOWxjZ3JmZHByNmFzams2MG8zZWUzMzc0c2pjcDFoNm9xNjZwYjJjY29qNG9oZzZzcm0yb3IxNzVobTRkOWo2OHBnIDVyb3JmbTQybnZtcHQ3N2FjMHZ1bHQ5aWlnQGc https://github.com/boostorg/boost/releases/tag/boost-1.89.0
