Hi! My name is epthopper, and I'm the TO of a semi-competitive Vintage league that will be taking place over the next few weeks on untap.in, a free online testing website.
We will be firing once we have 32+ players signed up (at the time of posting, we have 22). Commitment is 1 match per week, 5-6 rounds and a cut to top 8.
In order to join the league, you must be on the Untap Open League discord server: https://discord.gg/AUQE232
Signup form: https://goo.gl/forms/3KDcnyGB2iEM1CH32
Edit: Link to a previous post by Thomas Snodgrass in which he goes into more detail: http://www.themanadrain.com/topic/2214/untap-vintage-league-nov-11th-online-swiss-league