Yup! The last balance & patch update was in October 2024. Early 2024 they announced there would be a new DLC in late 2024. Prior to the patch, also in October 2024, they announced the DLC was delayed, before in January 2025 it was cancelled entirely.
Prior to that, in August 2023 it went free-to-play with a limited rotating roster of civs, with the option to pay to unlock fully. And it received its last DLC in May 2022.
AoE2 and 4 are both still receiving regular updates, as is Age of Mythology. Though only 2 and 4 are getting representation at the Wololo tournament at the Royal Albert Hall early next year.