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Here's what SpaceX put on their website before their most recent (fourth) flight test of Starship.

and here's what they posted before the third flight test

Both have pretty clear language about them being test flights (especially the flight 3 post), and list what they hope to test.

edit: they have not yet made an official page on their website for the upcoming fifth test flight

although they have teased about trying to return Booster to the tower for a catch attempt.