Microsoft continues to work on Windows 10 Mobile, and a new build has hit the company's internal Fast distribution ring. According to Windows Insider head Gabriel Aul, the current internal Fast build is 10559.
Responding to questions on Twitter, Aul said this:
10559 is in internal Fast ring now.
This comes just a few days before Microsoft's big event in New York, which takes place on Tuesday, October 6. Aul has previously stated that Windows Insiders should not expect any more builds before the big event. The most recent Insider build, 10536, was released a few weeks ago.