VRoid Studio Download Link
The beta version for VRoid Studio will remain available for a while.
The models you have created on the beta versions cannot be used as they are on the stable version, as they would need updating. You will need to convert your models via the Conversion feature.
For more detail on how to convert your models' data, check this article.
If you wish to edit a model you created on a beta version, please download VRoid Studio ver. 0.14.0.