Well, this has indeed become true and in this year's championship the CBF (Brazilian Football Confederation) will hold an opening match and not a full round as is currently the case.
Possibly the main idea is to hold this debut match with last year's Brasileirao champion (Palmeiras) against another team that has a large fan base (I believe Flamengo or Corinthians could be those teams).
Look, I confess this is something interesting and that it never happened in the Brasileirao, perhaps this type of change could give more visibility and notoriety to this year's of Brazilian Championship.
This opening match is sure to attract more attention, to have a full stadium and full media attention, since it will only be 1 game
And it will be on April 13th
I also believe that it will be Palmeiras vs Flamengo, it makes more sense to have a match between the champion (from the state of São Paulo) and the team with the biggest fans (from the state of Rio de Janeiro) Flamengo, it will certainly fill the stadium and give a lot of audience. There are Flamengo fans all over Brazil
So, I remembered now...
In the Brasileirão we also have a women's league that is gaining a lot of prominence and praise, as the quality of their football is enough to impress many men.
In this sense, I am updating the OP with information about the women's championship, which will start on March 17th with the following teams:
It's very good that the women's league is gaining attention, with more games being broadcast, more sponsors and more teams joining women's soccer. It's a good opportunity, especially for younger women, to have a chance to earn money from soccer, something that was practically impossible until a few years ago.
I don't know if there will be betting on women's soccer. Last year I placed several bets on the World Cup, but I don't remember seeing the Brazilian championship