Microsoft has released Windows 10 Insider Preview Build 18885 for Insiders in the Fast ring. This build introduces new features for the Your Phone app, adds better dictation support, and includes a fix for USB drive and SD card drive letter reassignments after an upgrade. Microsoft is rolling out a new feature that allows you to receive Android notifications directly on your Windows 10 PC. Microsoft has added greater support for the PhoneScreen feature by now supporting the OnePlus 6, Samsung Galaxy S10e, S10, Note 8, Note 9 and OnePlus 6T.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-insider-build-18885-fixes-usb-drive-letter-reassignments/