Not necessarily; the schematics of ICs in datasheets often can and do significantly differ from what's on the silicon, as to the user the important part is how the part performs in circuit, not its internal structure. (I suppose this is quite a non-leaky abstraction.)
ST's datasheet also has this standard disclaimer, so it's also perfectly acceptable for them to change it from a legal perspective:
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice.
ST's datasheet also has this standard disclaimer, so it's also perfectly acceptable for them to change it from a legal perspective:
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice.