For some reason, Microsoft didn't update Windows 10 Mobile along with PCs yesterday for Patch Tuesday. Those cumulative updates, however, are rolling out today for phones on 1709, 1703, and 1607.
Build 14393.2068 RSS
Today is Patch Tuesday, which means that Microsoft is releasing cumulative updates for all supported versions of Windows 10, including builds 16299.248, 15063.909, 14393.2068, and more.