Since Opera has released an official Flatpak version of Opera GX, it would be reasonable to expect the same level of support for the standard Opera browser.
Currently, there is an Opera Flatpak package available, but it is maintained by the community and not officially supported. An official Flatpak release would improve reliability, security updates, and user trust, especially for distributions that rely heavily on Flatpak as a primary packaging format.
Providing an official Flatpak for Opera would also ensure consistency across your Linux offerings and better support users in sandboxed environments.