After upgrading from Photoshop Elements 2018, I upgraded to Photoshop Elements 2020. After getting everything setup and working, I started Photoshop Elements and noticed something in the startup screen to compare my Photoshop Elements 2020 to Photoshop Elements 2018. I thought it would show new stuff in 2020. Instead, I wonder if I am now running Photoshop Elements 2018, because when I open Photoshop Elements, the System Info shows:
Adobe Photoshop Elements Version: 18.0 (20200120.m.139570) x64
Operating System: Windows 10 64-bit
Version: 10 or greater
System architecture: Intel CPU Family:6, Model:14, Stepping:9 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, AVX, AVX2, HyperThreading
Physical processor count: 2
Logical processor count: 4
Processor speed: 2904 MHz
Built-in memory: 16269 MB
Free memory: 9634 MB
Memory available to Photoshop Elements: 14883 MB
Memory used by Photoshop Elements: 70 %
Image tile size: 128K
Image cache levels: 6
Font Preview: Medium
Display Bounds: top=0, left=0, bottom=1080, right=1920
OpenGL Drawing: Disabled.
License Type: Perpetual
Serial number: <serial number removed>
Feature::Dummy Feature: OFF
Application folder: C:\Program Files\Adobe\Photoshop Elements 2020\
You have pse 2020 which is version 18. pse 2018 was v.16
Thank You. Since I just upgraded from 2018 to 2020, I thought it would be Version 20, Not Version 18.
Welcome to the world of Adobe Technical versions vs marketing versions. Framemaker and Captivate don't currently do annual updates.
This not authoritative. It is based on what I have been able to figure out.