Yesterday, Microsoft released its latest beta test build of Windows 10 "Redstone" -- the version of Windows 10 that's widely expected to roll out in June or July. Dubbed Build 14257.rs1_release.160131-1800, it's available to those in the Insider Program on the Fast ring. It follows Build 14251, which was released a week ago.
As Gabe Aul's note verifies, there's almost nothing new to see. I played with it overnight and found it to be indistinguishable from Build 14251, although it breaks Windows Hello. The Git client now works, and a few minor bugs got squashed. Essentially all of the work is going on under the hood.
It's a boring build. That's remarkable, really. I can't recall ever being in a beta where builds this early in the cycle were so stable.
Hope springs eternal.
P.S. Aul links to a downloadable picture of a Ninja Monkey that's supposed to be the successor to the Windows Insider Ninja Cat. I can't get the link to work, but your results may vary. The monkey is in honor of Chinese New Year, which arrives on Feb. 8 ... unless you're trapped in a Guangzhou train station with 100,000 other revelers. (Pedantic note: Chinese New Year is one of many lunar new years. My favorite, Songkran, falls in April.)