It appears the T&Cs have been updated (Page 3 under Roaming) as of the 5th March 2025 to reflect the change.
https://ee.co.uk/content/dam/help/terms-and-conditions/mobile/pay-monthly/phone-plans/ee-simo-plan-t...
"From 5th March 2025 roaming in EE's EU Zone and Rest of World Zone 1 is included in Full Works plans and allows you to access your standard plan allowances in in 47 European destinations (as above) and Albania, Algeria, Australia, Bangladesh, Bosnia and Herzegovina, Canada, China, Dominican Republic, Faroe Islands, Fiji, Indonesia, Israel, Kuwait, Malaysia, Mexico, Moldova, Montenegro, New Zealand, Oman, Peru, Puerto Rico, Qatar, Serbia, Seychelles, Singapore, South Africa, South Korea, Taiwan, Thailand, Turkey, United Arab Emirates, United States, Vietnam. Remember, data fair use policy outside UK of 50GB applies. See ee.co.uk/terms for countries and details. Allowances last until next bill or until used up, whichever comes first. Allowances don't roll over. Our stable links policy applies, as set out in the Plan Terms. Once you have used up the allowance, or hit your 50GB fair use amount, standard rates apply as set out in the Non-Standard Price Guide."
