Most publicly traded companies require you to announce if you slip from a date you publicly committed to, especially if it has any revenue impact (said from experience in this arena) — otherwise you are misleading investors about expected and/or cost.

If you announce a plan to deliver X in Q3 and then it slips to Q1 of the next year you typically have to announce that and Wall Street typically doesn’t look too kindly at that.

This is hardly a market moving event so why announce something you may have to later announce is delayed