Pléiades Neo is a constellation of four optical high-resolution Earth observation satellites built and operated by Airbus. It is a dual purpose constellation, serving both civilian and military purposes. Pléiades Neo 3 is the first satellite in the constellation which is to deliver imagery with spatial resolution of 30 cm. It is launched along with several rideshare payloads.
The countdown on Airbus website points to a Apr 20 01:50 UTC launch time.