wHxTrhA Reddit user has posted some screenshots and changelog of what looks like the upcoming WhatsApp version for Windows Phone. The user claims that, the changelog has been sent for translation and the new version will be available soon.

Claimed Changelog:

Share a precise location

Add captions to photos and videos

Crop and rotate photos

You can archive chats and groups

Better support for phones with high-resolution screens

Source

Thanks Roku for the tip. Cheers!!