Advance notice: a number of days, or a sentiment
Advance notice is the warning a vendor commits to give before a model goes. Only a figure counted in days or months can be planned against. A promise to give notice without a number is a statement of intent, and this register records it as an unfilled cell rather than as a generous one. As of 2026-09-22.
| What is published | What a production can do with it |
|---|---|
| A figure in days or months | Size the migration and put it in a calendar |
| Advance notice promised, uncounted | Nothing; the runway cannot be calculated |
| An interval observed after a retirement | Nothing; one sample is not a policy |
| Nothing at all | Keep records, because nothing will warn you |
Inclusion rule. Filled from pages where the seller or the maker states what warning it will give. An interval observed after the fact is never recorded as a commitment. Order. From the strongest commitment to the weakest.
1A number is the whole difference
Three entries in this register commit to a figure, and all three sell to developers. Every entry selling a creative tool publishes none, which is a pattern rather than a coincidence.
The pattern makes sense from the seller's side: a notice period is a promise to somebody who has written a model identifier into software. It is not the kind of promise a subscription page is written to make.
2An observed interval is not a commitment
The one completed retirement here left about five months between two closures. Nothing in the notice presents that as policy, so it sets a floor on what is possible and says nothing about what is usual.
Treating it as typical would set every plan in this field against a number nobody promised. The register keeps it in a detail column for exactly that reason.
3Where notice exists, it may not reach you
A notice period published by a hosting platform is a commitment to that platform's customers. A production reaching a model through an application is two layers away, and the commitment does not travel down the chain.
So the question is not only whether a period exists but who it was made to. The notice question sets out how the layers stack.
A definition rather than a dated entry: no line above is a vendor statement. Where this word turns up in a real notice, the wording and the date are on the notice period column. Nearby terms: General availability, Preview model, Non-extendable date.