Newly painted curbs on Fulton Street near the South Oculus Plaza are probably more for improving the outdoor experience and not related in any way to actual street construction around the site of the PAC or Two WTC:
https://www.instagram.com/p/CwDh_rSMBGq/
https://www.instagram.com/p/Cwk_7qeM31B/
Apparently that expanded pedestrian area that became visible in July 2023 is informally referred to as Frolic on Fulton.