There’s a jolly useful article published by Microsoft on the different servicing options for Windows 10. If you still haven’t got to grips with Current Branch, Current Branch for Business, and Long Term Servicing Branch then this article is worth a read: http://bit.ly/1OcDI7B.

There’s confirmation that Feature Upgrades will be published 2 or 3 times a year, and Service Updates (security fixes) will continue to be published monthly on Update (Patch) Tuesday. It’s also worth noting that all new releases, of either type, are cumulative so that installing them brings a device completely up to date.