Display "available soon" alert vs hide link to the unfinished feature

Problem:

Which approach is better when we have unfinished feature:
- display "available soon" alert
- hide link to the unfinished feature

What are pros and cons of both approaches?

Solution:

- display "available soon" alert
On the one hand, it is good to make prototype of all features and see if it fits in UI / UX.

- hide link to the unfinished feature
On the other hand, maybe it'd be better to just hide the unfinished feature at all and don't bother user with them.
Maybe in the near future the feature will be removed at all from the product, or it won't be finished at all like some TODO in legacy code :)

Suggest edits to help to see different perspective.