"Era, the new Rust-based calendar for GNOME, is now in beta"
"And you don’t need to schedule a date to try it; a beta release is available to install from Flathub. Era is a new Rust-based calendar app for GNOME that describes itself as “beautiful and performant”."
https://www.omgubuntu.co.uk/2026/09/era-rust-calendar-gnome-beta