It’s a pretty ambitious project that will likely give SNES games a new look, specially for users that plays on 16:9 screens and would like to experience a game with a larger horizontal screen without stretching.
We have spent several hours brainstorming how a SNES with native widescreen would output and now we are starting to create a game specific patches which aims to make the game work with the larger internal screen size (352×224 instead of 256×224). Widescreen is the new project being developed lead specially by DerKoun (author of bsnes-hd), Near (author of bsnes and ares) and ocesse (currently writing a widescreen patch for Super Metroid). It’s a fork of bsnes which aims into improving the user experience though features that normally you can’t do normally on the regular SNES, such as the Mode 7 HD which some people already know about it.
The patch is aimed specifically for an emulator called bsnes_hd.