If I wanted to enable platforms like Tizen or WebGL by adding our own renderer, how would I got about it with Noesis 2? Or is custom renderers maybe) coming up in future versions?

Custom renderers (like d3d9, d3d11, opengl, vulkan) can only be implemented in C++. For now, this is not possible in C# or Unity. Even if you could implement a WebGL renderer you still would have the problem of porting all Noesis code to javascript (we already started this port but we had to leave it out of 2.0).

Thanks! Good to know. What are the plans for the Tizen platform? They currently offer $10,000 for the top 100 apps over the next few months: http://www.tizenincentive.com Would be nice if one or more of them are using Noesis

No plans for now. But as soon as 2.0 settle (we need to fix a few crashes and problems being reported) we can give it a try. It seems Linux + OpenGL right?

Nice! Yes. It's Linux + OpenGL.