A new leaked information about the upcoming major update for Windows 10 appears online. Microsoft is planning to release RedStone 2 update or Windows 10 1703 in March 2017. Currently, Insider team is testing PC build 14950 and mobile build 10.0.14950.1000, which is compiled on October 13, 2016.
Recently, Microsoft released cumulative update KB3194798 (Build 14393.321), KB3192441 (build 10586.633) and KB3192440 (Build 10240.17146) for Windows 10 users. Windows 10 preview build 14931 is also now available for Slow ring insiders. You can download ISO from here.