Case T-221/25, TUI Belgium: Judgment of the General Court (Fifth Chamber, sitting with five Judges) of 25 March 2026 (request for a preliminary ruling from the Hof van Cassatie – Belgium) – TUI Belgium NV, TUI Belgium Retail NV, TUI Airlines Belgium NV, TUIFLY Academy Brussels NV, Tec4Jets NV, Pats NV, TUI Travel Belgium NV, TUI Technology NV, TUI Belgian Real Estate NV and BTW-eenheid Travel4You v Belgische Staat (Reference for a preliminary ruling – Taxation – Common system of VAT – Transactions subject to VAT – Supply of services for consideration – Exemptions – Standstill clause – Right of Member States to retain certain taxes during a transitional period – Article 28(3)(a) and (4) of Sixth Directive 77/388/EEC and Article 370 of Directive 2006/112/EC – Supply of services by travel agents in relation to travel outside the European Union – Annex E(15) to Sixth Directive 77/388 and Annex X, Part A, point (4), to Directive 2006/112 – Subsequent amendment of the national legislation – No express derogation from the exemption)