Interesting. I haven't attended TypeCon in a couple of years but last time I went algorithmic kerning was a fairly hot topic amongst event-goers and some of the people giving talks. Machine kerning is still sort of looked down upon as far as I can tell (in the design world) but as a practical tool it's great that people are working on it and it has certainly improved many times over.

It looks like a great article and I'm looking forward to going over it fully to see if there's anything really new but overall it looks quite clear and covers at least a few things that I've tried (maybe less than successfully) to describe to others.