I take preview to mean the model may be retired on an accelerated timescale and replaced with a "real" model so it's dangerous to put into prod unless you are paying attention.
Scheduled tasks in ChatGPT are useful for keeping track of these kinds of things. You can have it check daily whether there's a change in status, price, etc. for a particular model (or set of models).
Neither do I, but it's the best solution I've found so far. It beats checking models/prices manually every day to see if anything has changed, and it works well enough in practice.
But yeah, some kind of deterministic way to get alerts would be better.
E.g. call it Gemini Pro 2.5.1.