https://www.dpamicrophones.com/news/dpa-delivers-exquisite-sound-with-its-tiniest-ever-microphone-capsules

https://www.dpamicrophones.com/3mm

It is teeny tiny!

https://youtu.be/69LX5g-yjeA

Allen Lee Williams III ("Sound Speeds") has published his review of the DPA's d:screet 6060: DPA's d:screet 6060 - The New Superhero mic. Sound Speeds! - YouTube

Countryman introduced a new H7 headset mic (https://www.countryman.com/h7-headset-microphone/) as well, "which is based around a new side-address slim capsule". They stated the cardioid headset weighs less then grams.