Frontex, the European Border and Coast Guard Agency, confirms that holders of residence permits covered by the Withdrawal AgreementWithdrawal Agreement The Withdrawal Agreement sets out the terms of the UK’s withdrawal from the EU and provides for a deal on citizens’ rights. It sets out a transition period which lasts until 31 December 2020. During this time you can continue to live, work and study in the EU broadly as you did before 31 January 2020. If you are resident in Austria at the end of the transition period, you will be covered by the Withdrawal Agreement, and your rights will be protected for as long as you remain resident in Austria. Any rights that are not covered by the Withdrawal Agreement will be the subject of future negotiations. https://www.gov.uk/government/publications/new-withdrawal-agreement-and-political-declaration will be exempt from ETIASEuropean Travel Information and Authorisation System (ETIAS) The European Commission's proposed European Travel Information and Authorisation System (ETIAS) is intended to strengthen security checks on those persons who travel visa-free to the EU, currently nationals from over 60 countries. The largely automated IT system will identify any security or irregular migratory risks posed by visa-exempt visitors travelling to the Schengen area, whilst at the same time facilitating crossing borders for the vast majority of travellers who do not pose such risks. Non-EU nationals who do not need a visa to travel to the Schengen area will have to apply for a travel authorisation through the ETIAS system prior to their trip. It is due to go live in 2024.:
ETIAS exemptions for British nationals beneficiaries of the Withdrawal Agreement
Those UK nationals who are beneficiaries of the Withdrawal Agreement will be exempt from ETIAS: they can not only reside on the territory of their EU host country, but also travel to other Member States of the Schengen areaSchengen Area The Schengen Area is European border control-free travel area, consisting of all EU Member States except for Bulgaria, Croatia, Cyprus, Ireland and Romania, as well as Iceland, Norway, Switzerland and Liechtenstein. for a short-stay without an ETIAS travel authorisation.
Source: https://frontex.europa.eu/future-of-border-control/etias/#collapse-faq-AN2Z4-18
Official EU ETIAS Travel Site: