Thanks @Hulk for mentioning this in the service discussion forum.
Right now you get notifications of tags, reactions and replies to threads you create. These are just in-app notifications though which are great for live sessions but not ideal for users who have gone offline.
We would like to extend the notifications to include optional Emails and Push Notifications (PWA).
In addition to this we would also like to include a broader range of notifications including the ability to watch and be updated about topics of interest.
These will eventually all be optional.