Speed league?

I have seen a couple of references to "speed league" but cannot find a description or a way to sigh up. What am I missing?

You can sign up in two ways:

• Visit Tournaments → Speed League, which lists all leagues and explains the format. Click Join beside your chosen variant.
  
• Open a variant’s page—for example, Go 13×13—and follow Speed League registration.
  

Registration is open, with the first start planned for 15 November. Each variant needs at least five registered players to start.

I can't find the speed league in the app via tournaments, only on the variants page.