Unless specified on the roadmap itself, student facing features launch in May of the relevant cycle when it opens, and new data will be available to providers in September of the same cycle when ‘pay & send’ opens, e.g. Residency, Nationality, Address data improvements will launch for students completing the 2025 application in May 2025 and the data will be available to providers in September 2025.
Here is the link: https://www.ucas.com/providers/news-and-developments/provider-developments-ucas#provider-roadmap