does anyone know when is OnePlus 10 pro getting Android 13 or oxygen OS13?

Even the 8, 8 Pro, and 8T series all got stable Android 13 for India and NA (Global) yesterday morning.  The EU update will be the next focus because of Google's anti-competive behaviors are not permitted on devices destin for the EU, so "features" need to be changed to accommodate that.  Once the EU version is ready for devices, then OnePlus will begin work on the T-Mobile firmware variant.