When will the win10 consumer preview release?

The Build 9879 released last week is the last preview update of Win10 this year. So, when will the next update come next year?
The foreign media reported today that some sources said that Microsoft will Will launch the first consumer preview version of Win10, and show the world a lot of new features of Win10.
Specifically, these new features include active tiles on the desktop, IE12, a further improved notification center, and more. In addition, it is said that the desktop icons will also change greatly. Many desktop icons that continue from Vista to Win8 will be gone forever.
In addition, it is said that Microsoft will release the Win10 RC version at the Build 2015 conference next year (end of April next year).