A beta version of the Samsung Health app has confirmed the company's plans to launch the Galaxy Watch5 and Galaxy Watch5 Pro later this year. Additionally, the app now contains a reference to skin temperature monitoring, a rumoured Galaxy Watch5 feature. Unfortunately, the Galaxy Watch5 and Galaxy Watch5 Pro may only support up to 5 W charging, rather than matching Apple's fast charging capabilities.
https://www.notebookcheck.net/New-Galaxy-Watch5-and-Galaxy-Watch5-Pro-details-provided-by-Samsung-Health-app-as-5-W-charging-capabilities-mooted.625040.0.html