The 13th 2022 issue of the Weekly Shonen Jump just came out in Japan and with it an official confirmation that the final arc in September last year, and it will get a 26-page chapter for the next issue, along with a color page. 18631y
You can read the manga on VIZ or MANGA Plus, and they describe the story:
One fateful day, all of humanity was petrified by a blinding flash of light. After several millennia, high schooler Taiju awakens and finds himself lost in a world of statues. However, he’s not alone! His science-loving friend Senku’s been up and running for a few months and he’s got a grand plan in mind—to kickstart civilization with the power of science!
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Source: Weekly Shonen Jump Issue 13
©Riichiro Inagaki, Boichi / Shueisha