Earlier this week, Synaptics did a joint presentation with AMD about some new biometric security solutions for the AMD platform. Interestingly, Synaptics revealed during the event that Microsoft is working on a new biometric security OS including Windows Hello.
Windows Central speculates the comment may refer to Microsoft's project Polaris, a modular version of Windows 10:
Built on an internal project called Windows Core OS, which aims to turn Windows into a modular OS, Polaris is said to focus on desktop, laptop, and 2-in-1 form factors. The goal of Polaris is to provide a shell that Windows users are familiar with, but while leaving behind legacy components in favor of UWP apps. According to our reporting, Polaris would still be able to utilize some form of virtualization to run Win32 programs. However, dropping legacy cruft would, in theory, allow Microsoft to create a more secure version of Windows 10.
According to the latest rumors, Polaris may see a 2019 release. But it's not known if this is the product Synaptics was referring to.