Google Photos’s promise of unlimited free storage is going away — from fastcompany.com by Jared Newma
Starting in June of next year, new Google Photos uploads will count toward a storage limit, even at reduced resolution.

Excerpt:

Starting on June 1, 2021, Google will begin counting new photo and video uploads toward users’ storage limits, even for the compressed “high-quality” images that Google stores for free today. Existing photos and videos won’t count toward the storage limit, but for anyone who keeps using the service, the core promise of unlimited free storage is effectively going away.