Seems it's perhaps possible to access the channel already today for free through the Google app but, only as Dutch subscriber. Don't know if it works to bypass with a VPN.
Dutch subscribers will enjoy free access to the service until the official launch on 12 November. Disney+ is the new home on your Android for unlimited access to your favourite movies and series from Disney, Pixar, Marvel, Star Wars, National Geographic, and more. Join now to enjoy...
Disney+ is rolling out worldwide via a staggered rollout plan, first with the United States, Canada and the Netherlands on November 12, 2019, then Australia and New Zealand on November 19, 2019, then the United Kingdom, Western Europe, and Latin America throughout 2020, with other regions such as Asia-Pacific and Eastern Europe gaining access to Disney+ by September 2021.