The UK has close to comprehensive DAB+ coverage, so owners of the Stylus 2 will likely be able to access digital radio anywhere. In Australia, only the metro capitals have DAB+, so there will be sections of the country that are better suited for the phone at this time.
Radio access on smartphones has been a topic of interest for the broadcast industry for years. Much of the lobbying from the industry has focused on enabling FM chips in phones to access terrestrial signals. The launch of the Stylus puts digital radio and DAB+ in the spotlight, and it should be interesting to see how many other manufacturers opt to jump on that trend.