The revised scope of the LCLS-II Project has been aligned with the findings and recommendations of the Basic Energy Sciences Subcommittee report of 25 July 2013, which identified the importance of a high repetition rate X-ray free-electron laser source. The project will construct a 4 GeV continuous-wave (CW) superconducting linear accelerator in the first kilometer of the SLAC linear accelerator tunnel. The linac will provide pulses of electrons at rates of up to 1 MHz to two new undulators in the existing LCLS Undulator Hall. The two undulators will cover the spectral ranges 0.2-1.2 keV and 1-5 keV, respectively, when receiving electrons from the new linac. The existing LCLS linac will continue to operate, providing hard Xrays up to 25 keV. Existing X-ray instruments will be repurposed to exploit these new capabilities. Show Partial Abstract