That part of it is pretty much available now as people are choosing to disclose that information here: "What Librem 5 batch am I in?" – Purism
and What's your estimated shipping batch? (poll) may be of interest.
Basically unless you ordered in August 2017, you are likely to be in Evergreen.
Things can be complicated by the fact that some people will have voluntarily opted for a later batch (and consequently freed up a slot for someone to get an earlier batch). Things may also be complicated by modem choice for those who need or want a modem either not in the first two Broadmobi modems or not in the first two Broadmobi modems plus the first two Gemalto modems.