There’s no errata section yet on this forum so I post it here.
In chapter 1, page 20, it says:
Unity Plus: This edition costs $35/month if you pay yearly, or $50/month if you
pay monthly. It comes with performance reporting tools, the Unity Pro skin and
some additional features. This version still requires your company make less than
$100,000/year, and it still displays a splash screen at launch.
However, in the comparison web page, https://store.unity.com/, there are different statements for Unity Plus:
Splash screen: Custom Animation or None
Revenue Capacity: $200k
I guess the web is correct.