Allow future posts to be published immediately

[philtre_neuf]

If a post author sets the post date somewhere in the future, it is now automatically scheduled for publication.

Ideally, one would be able to choose whether to:

1. schedule the post for later publication

2. publish the post immediately with a future timestamp

Uses:

• For publishing posts about upcoming events

• For fictional blogs that take place in the future

Basically, if I can publish posts with a past date, I'd like to be able to publish them with a future date.
In effect, separate post scheduling from the post date.

Use custom fields for the future date instead.