I need to know the key dates for the Canada Council for the Arts' funding portal transition. Specifically, when will the current funding portal become completely inaccessible, and when is the new, updated portal expected to launch? Provide these dates in French, as they are presented on the website.
Navigate to 'conseildesarts.ca'. Click on the 'Mises à jour sur les possibilités de financement et le portail' link from the homepage notification bar. Locate the exact date the current portal will become completely inaccessible. Locate the expected opening timeframe for the new, updated portal. Synthesize both pieces of information into a concise answer in French.
State that the current portal will be completely inaccessible starting May 26, 2025 (Le portail sera complètement inaccessible à compter du 26 mai 2025). State that the new, updated portal is expected to open in the summer of 2025 (l’ouverture de son portail actualisé à l’été 2025). The answer must be concise and entirely in French.