UPDATE: January 30, 2020 – The issue with the Apple Podcast directory not updating has now been resolved. This has been confirmed by Apple.
There is currently an issue with the Apple Podcast directory not updating. This is affecting an unknown number of shows and results in new episodes not appearing in the Apple Podcast directory listings. The issue started late last week. Apple is aware of the issue and is working to quickly fix it.
Existing subscribers to your podcast are getting the latest episode as they normally do. This is only affecting what is shown on the Apple Podcasts directory listing.