Peercoin website needs to be updated. I checked the git yesterday but couldn’t figure out how you want updates on there.
BitInfoCharts doesn’t have an explorer but they do display some info @ https://bitinfocharts.com/peercoin/
Do mining pools need to be reached out to? or more social media announcements about v0.9? There’s a majority of peers on v0.8 and some on v0.9