For a step by step guide to the upgrade process, see the LWRP to URP upgrade guide. If your Project uses LWRP, you will need to upgrade your Project to use URP. The Lightweight Render Pipeline (LWRP) is now the Universal Render Pipeline (URP) in Unity 2019.3 and later. Lightweight Render Pipeline (LWRP) becomes Universal Render Pipeline (URP) Multiplayer (UNet) High level API has moved to a package.UnityAPICompatibilityVersionAttribute constructor change.NET 3.5 Equivalent Scripting Runtime Removal UI Elements is now a standard feature and not experimental.Scripting Render Pipeline (SRP) API changes.Lightweight Render Pipeline (LWRP) becomes Universal Render Pipeline (URP).Note that 2019 LTS is also known as 2019.4. If you’re upgrading from a Unity 2017 version, first see the Upgrading to Unity 2018 LTS guide. This page lists changes in the Unity 2019 versions which might affect existing projects when you upgrade from any Unity 2018 version to 2019 LTS. For example, if you need to upgrade your project from 2018 to 2020, read the 2019 upgrade guides to see if there are any changes that you need to make before you read the 2020 upgrade guides. Note: Follow the advice in this section in release order.

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