If you look at the first screenshot in the article it shows what the pre-registration page looks like.
It says:
Perks of pre-registering
- Automatic install
Install automatically when it's available
It says:
Perks of pre-registering
- Automatic install
Install automatically when it's available
It's up to the users.
Users install a whole bunch of apps on their phone when looking for a solution to a problem and a fair few of those are never actually launched.