Did I miss an announcement / discussion of this in the TeX / opensource community somewhere? Apparently the specification has just gotten worked up, now we have to wait for the tools to catch up: https://medium.com/@tiro/https-medium-com-tiro-introducing- opentype-variable-fonts-12ba6cd2369#.w0qlxz76u http://fontbureau.typenetwork.com/news/article/opentype-font -variations-open-up-a-world-of-possibilities http://practicaltypography.com/the-scorpion-express.html It'll be fun to play w/ Skia again, and I guess I can dust off my work on unfinished fonts this would apply to... William