It has become increasingly clear during the last few years that the current wxWidgets code base is simply too out of date for the present day connected, mobile, cloud-based computing world. So, after a deep and careful consideration, we have decided to launch a new project, wxWidgets 2020, which will allow us to remedy this.
Of course, we, wxWidgets developers, take the backwards compatibility seriously and so we have also thought of a couple of the current users of the library who might have some existing C++ code. Luckily, migrating it to wxWidgets 2020 should be easy to do as you'd simply need to recompile it using asm.js which will be proven to work flawlessly as soon as we test it. And if it ever doesn't, there is always the fall back solution of continuing to run the existing code unchanged inside a virtual machine running inside the web browser -- after all, the modern hardware is largely fast enough to allow doing this, and it would be a pity to keep these CPUs idle.