That means ST is still manufacturing it for existing production programs, but the part is on a known path toward end-of-life. For a production line already qualified on this MCU, the immediate concern is securing enough lifetime buy inventory before the EOL notice drops. For any new design, the smart move is to evaluate a pin-compatible or software-compatible STM8A sibling — ST's own STM8AF6266 (non-TAX suffix) or a later STM8AF variant in the same 32-LQFP package — before committing the BOM.
Industrial temperature grade, automotive series
It will handle engine-bay-adjacent environments and outdoor telecom cabinets, but not the 125°C under-hood zones where an AEC-Q100 125°C-grade MCU would be required.