Another goal here is to produce more compact versions of the tunes. This is so sets fit better on the small-screen gadgets that are becoming popular in many musical circles. We'll see how well this works in practice. Here in New England, the NEFR books are quite popular with many people, but there are complaints about the difficulties in using the later book(s) at a dance. The main change is that many tunes have written-out parts that have been compacted by using repeats with multiple endings, to help make them readable on small screens.
The entries with names ending in "set" mostly now come in 2 or 3 versions. The one with the largest number in the "st" (staffs/staves) has the versions from the book, usally with a four 4-staff layout. Those with smaller "st" values have various ways of compressing the tunes, usually by adding repeats when possible and mostly ending with 1st and 2nd endings. A few have been further reduced by comparing them with other versions online. You can test them and see which fit your screen best.