Microsoft has released new builds of Windows 10 on both the PC and Mobile side to members of the Windows Insider program this week. However, they were apparently the last new builds that Microsoft will release in 2015.
In a blog post, Microsoft's Gabriel Aul stated:
"This time of year many of us take the opportunity to spend time with family and take some vacation time, so the engineering team will be running at a slower pace and many of our key people who drive our flighting process will be out (including me) This means we won't be releasing any new builds to Windows Insiders until January, for both PC and mobile."
While the Windows team is taking a holday break, Aul has already revealed that it plans to release new Windows 10 builds to Windows Insiders on the Fast ring at a more rapid pace starting in January.