At Sitecore we are doing our best to listen to the community. After receiving some feedback and discussing it with the MVPs we re-published Sitecore 9.1.0 on MyGet.

Does this impact my current solution?

We will remove the listing from the gallery of the "old" 9.1 version ( but it remains available for those who know the feed URL, so you do not need to do anything with your current solution.

Should I update my feed references?

As the "old" 9.1 feed ( will be deprecated at a later point in time, please update when you can to use the public feed for official Sitecore Platform 9.1 packages (