The criterion is, it's tracks that were COMPLETED in 1968. Bradsupremes, you're right: some of these were indeed started in 66/67, and three are overdubs on 1965 tracks.

We're moving forward through the mixing, and as I feared we've lost a few due to being unable to fix poor or incomplete performances. But nothing has failed to clear yet, as far as I know, so fingers crossed ... I'll publish a track list somewhere as soon as it's finalised