The info popup for Tributes notes the maximum tributes you can have is 150.
However, if you interact with a Defense Site and go into info on Tributes, it still notes the old maximum amount of 100 Tributes.
Checked the July 2(3?) v1.3.0.0 PlayTest 24010949 build as well to make sure it wasn’t already seen and corrected, but the outdated max tribute amount in Defense Site info is present in it as well so I am reporting this here instead of in PT bug forum.