Earlier this week, Lumia 640 and 640 XL received a minor update, but it seems the update brings way more than what was mentioned on the Nokia Conversations discussion board. The folks at MSMobile.pl managed to get their hands on the internal change log which lists a handful of enhancements and bug fixes.
As you can see from the leaked change log below, the update comes with several improvements related to the performance of the camera on the device, as well as a handful of generic bug fixes.
Just keep an eye on the notifications area on your Lumia 640 or you can manually check for the update from the Settings on your device. Let us know if you've received the update on your Lumia 640 using the comments below.