The press are reporting that the governor of Upper Austria (includes Linz, Hallstatt and St. Wolfgang) has announced a lockdown for all effective from next Monday for the states of Upper Austria and Salzburg. Note that Salzburg is not also the city but also a State in Austria which includes a large part of the Alps and ski areas like Zell am See.
There are rumors that the entire country will follow soon.
Travelers with upcoming travel to the states of Upper Austria and Salzburg should keep their eye on the news and the official websites of the government.