As its version number suggests, Ubuntu SDK 4.1.0 is based on the recently released Qt Creator 4.1 IDE developed by The Qt Company, which came only a couple of weeks ago, at the end of August 2016, with two new themes, editor improvements, better CMake support, and many other goodies that you can read in our initial report. Also changed in the Ubuntu SDK 4.1.0 IDE is the addition of a new backend based on the next-generation LXD container hypervisor for Linux. It replaces the click chroot-based builders, and lets the Ubuntu SDK devs to fetch and use pre-built SDK images when a new build target is generated.