Where I can find My Lists in the recent Foursquare v8 app?
I've asked the support and I've received the following answer:


  Currently you can save to your to-do list on the Foursquare app.
  Saving to other lists should be coming soon. Your lists are available
  if you visit Foursquare and navigate to Profile > Saved Places. See
  you existing lists by tapping on "See all of your saved lists."
  
  To add to your list, simply go to a listing on Foursquare and hit
  “Save." To remove, simple tap "Save" again. Keep in mind lists are
  viewable to the public.
  
  To learn more about lists and how you can use them on Foursquare check
  out this article:
  https://support.foursquare.com/hc/en-us/articles/201104950-Lists