I like to use beta version of SpacesSDK. How to get access to beta versions?
You just need a Development Kit to access and use Snapdragon Spaces SDK.
The SDK is completely free and can be downloaded from Snapdragon Spaces Developer Account.
If you are referring to pre-release versions of the SDK, they are available to Qualcomm team and some members of the Snapdragon Spaces Pathfinder program.
Let me know if you have any other questions.