叶湘伦 We've decided to use the Spine 4.2 version for our game because the physics simulation is crucial for us. We anticipate releasing the game in about six months. If the 4.2 version hasn't been officially released by then, can we use the beta version of the runtime?
Nate Yes! Using the beta version just means that 1) there may not yet be runtime support for all runtimes, and 2) there may be bugs. If this is acceptable, you can use it even now.