If Purism asked for your shipping address to send you Birch/Chestnut/Dogwood and you declined and postponed to Evergreen, then you get your phone in 2020. Otherwise in 2021. Discussion: Librem 5 shipping email.
Concerning the software, see: https://source.puri.sm/Librem5/community-wiki/-/wikis/Frequently-Asked-Questions#3-software-and-os