These are the most important new features (comparing SDK 2.0 RC with SDK 1.2.4.1): The whole tech stack was revised and rebuilt to enable features envisioned by both customers and the internal development team. Quantum 2 brings major improvements over the foundations established with battle-proven version 1.2.
Gameplay code fully decoupled from presentation logic. Quantum also helps the developer to write clean code, fully decoupling simulation logic (Quantum ECS) from view/presentation (Unity), while also taking care of the network implementations specifics (internal predict/rollback + transport layer + game agnostic server logic): It is based on the predict/rollback approach which is ideal for latency-sensitive online games such as action RPGs, sports games, fighting games, FPS and more. Photon Quantum is a high-performance deterministic ECS (Entity Component System) framework for online multiplayer games made with Unity. We are also moving to a faster release iteration process in which we will tag permanently available "flagged" versions + nightly builds for immediate access to latest bug-fixes and new features: check out the SDK downloads section. The 2.0 SDK is available for download and ready to be used.