Galaxy Watch4 Classic marketing images have leaked, over a month before the smartwatch's expected release. Supposedly, Samsung plans to release the Classic in 42 mm, 44 mm and 46 mm sizes, all with 20 mm watch straps.
https://www.notebookcheck.net/Samsung-Galaxy-Watch4-Classic-A-chic-refinement-of-the-Galaxy-Watch3-that-will-be-available-in-three-sizes.548455.0.html