Renault is confirmed to end F1 engine project with Alpine after the announcement: "Alpine creates Hypertech Alpine, its new high-tech engineering centre in Viry-Châtillon". Src: https://media.alpinecars.com/alpine-creates-hypertech-alpine-its-new-high-tech-engineering-centre-in-viry-chatillon/?lang=eng

Some claim that the Alpine F1 team are set for Mercedes PU switch in 2026.

https://www.autosport.com/f1/news/alpine-to-end-f1-engine-programme-after-2025/10659351/

This claim is true. It was resolved 1 year ago

https://www.formula1.com/en/latest/article/alpine-to-use-mercedes-power-units-and-gearbox-from-2026.5jzzbQeHx7aPT3hoP5hRtc