F-35C now officially online for the USN

https://www.cnbc.com/2019/02/28/the...ensive-weapons-system-ready-for-war.html

And the F-35B just completed its first deployment, including first combat strikes:

https://news.usni.org/2019/02/28/13...me-ending-first-f-35b-combat-deployment?

The Belgian airforce have been plugging away at how the F-35 will be more cost effective than maintaining the F-16, but there has been a bit of a scandal over the figures for the maintaining the F-16 as they were found to have been padded out a bit to make the F-35 look a bit better.
Still no "official" government comment on whether Belgium is going to take the F-35, the Euro Fighter, or keep the F-16, but the airforce seem to be pushing the F-35 for all it's worth