What would be the proper abbreviation for an event that has yet occur?

I am looking for an abbreviation for an event that is expected to occur in the future, but has yet to occur. Similar to TBD for to be determined and TBA for to be announced.

My events are a series of checkpoints and reviews that will occur in the life cycle of a product design at my company.

I am looking for an abbreviation to put into the date field before the actual checkpoint occurs.

UPDATE

To clarify, the term I am looking for is for something that will definitively happen. There is a chart that says things like : Initial review - (date), Secondary review - (date), etc. It is not an event that people will need to know in advance, but more of a this happened on this date kind of thing. I just want something to put in the date field instead of leaving it empty to indicate that it is not yet completed.

Solution 1:

You may also see TBC - To Be Confirmed. This can be applied to several details (e.g., date, venue, lineup etc.)

Solution 2:

If the event is supposed to take place:

• and you know the date, but aren't ready to announce it, use TBA.
• but the date isn’t known because it will take place only based on other events being completed, use TBD.
• and you know the date and can announce it, put the date.
• and only a relative date is known, use 2 weeks after Event X.