I just noticed too. This is from the official Clash of Clans social media handles. Their Twitter and Discord posted the same. Maybe they just got the rewards wrong, maybe it's meant for a different season.
Oof... Not gonna lie I'm a wee bit underwhelming lol. Not really sure if I like any of the options for tier 5, though I'll probably end up snagging the lab potions. And no instant hero or lab book in stage 6, plus a rune of elixer which feels like a weaker rune these days... ick. Must be a bit slow this summer lol