I don’t recall 2024 ever being mentioned. In August 2024 Daniel said, “Dorico 6 is not imminent. We are not anywhere near the grace period.” In January 2025 he said, “Work is well underway on the next major version of Dorico, which will be released this year.” So definitely a 2025 release.
I wouldn’t be surprised if they are aiming for June 1 or thereabouts as that’s great timing for the educational market. Any schools with funds left over from the 2024-25 school year can still use them for purchases, and there’s plenty of time to budget for 2025-26 when the fiscal calendar changes on July 1.