[Updated: 19-Sep-2020]
Timeline is changed now.
Here is a breakdown of the DTM deadlines that could make your implementation obsolete:
July 9, 2019 (already passed) – Option to create new DTM properties no longer available
October 14, 2020 – All DTM properties become read-only
April 13, 2021 – DTM servers go to sleep
[…] Migrating from Adobe DTM to Adobe Launch: An Infographic […]