signup success event removed in v10

In v9, there was a signup success event:
In v10, this is removed:

Any reason why this removed, and will it ever come back?

Lock 10 supports the authenticated event, which depending on your use case, can achieve similar outcomes to the deprecate signup success event. I suggest taking a look at the Lock 10 events documentation:

If this does not satisfy your requirements, please update your question with more information about what you are trying to achieve.

I want to show a thank you page after successfull sign-up, which I do not want to show when a user logs in. The authenticated does not distinguish between these events, or does it?