As noted by Blizzard Esports Leagues CEO Pete Vlastelica to German site Handelsblatt (translated by PC Gamer). In the interview he notes that Blizzard are looking to expand the Overwatch League's global reach with two more teams from the Americas, two from Asia-Pacific, and two from Europe and the Middle East. Fingers crossed that means one from Australia.
Although that might be unlikely due to the fact that for the inaugural season Overwatch League franchises sold for $20 million USD each. Which is rumoured to be going up for Season 2 based on the popularity of current competition and the success that teams have been finding. As the original interview was with a German publication Blizzard made special mention of Berlin and how it would be the perfect city to host an Overwatch League team.
In terms of the second season Blizzard also confirmed that all league matches will once again take place at Blizzard Arena, with home-and-away scheduling pushed back to the third season of competition.