Yes, your existing playlists will continue to be accessible when logged into your NFB account. These will appear in the Playlists tab on the vertical banner to the left. 

However, you will not be able to create new ones. This feature has been replaced by My List which allows you to bookmark films for later viewing. You can add titles to your list by clicking on the plus (+) icon on film pages, or from any film thumbnail on nfb.ca 

Remember that our online films no longer need any form of special permission to be accessed. You can share the links to the films with anyone.