Give it a good read :)
When a new game is created or updated, there are several stages in development before the product can be sold in the commercial marketplace. You might remember our Alpha Trial from July which was the first stage, in which the game is tested by software testers and gamers. A beta version is the name for the second stage of software testing.
The beta version of a software release is considered to be a preview. It has most of the standard features, but is not yet ready for wide release or sale. During this point, the studio will collect feedback from users about the product's usability — what they like and what should be changed — before the game´s wide release. A beta version of a game can be either a closed beta, which is limited to a specific group of users, or an open beta, which is available for the general public to use.
Today, most games are first released in beta version for testing.