June 2026
Release 20 — Calm studios, Schematron & Firefox
- Studio UI declutter: quieter sidebars, compact banners, recent modes only on file-forward studios.
- E-invoicing Schematron-lite rules (VAT category, due date, unit codes) in XRechnung validator.
- Firefox extension manifest, Chrome Web Store prep, PWA offline v11 with three more tools.