WhatsApp Beta for Windows 10 has been bumped up to version 2.17.86 in the Windows Store for beta testers.
The updated app now lets you view more details about individual chats, including how many texts there are, media content, gifs and so on.
For frequent WhatsApp users it provides a way for you to quickly learn who you text the most and what kind of context you frequently use. A more practical way this feature might be used is also in determining which chats take up the most storage so you can delete them in order to reclaim space.
WhatsApp likely will be rolling out this feature to its mainstream Windows phone app in the coming months.
In the meantime, you can grab WhatsApp Beta from the Store link below.