noun
beta version
Refers to a pre-release version of software or a product that is feature-complete but may still have bugs. Used in computing and tech contexts.
このアプリのベータ版をテストしています。
I'm testing the beta version of this app.
ベータ版ではまだいくつかの不具合が残っています。
There are still some bugs remaining in the beta version.
製品版 is the final, commercially released version, as opposed to the test version ベータ版.
From English 'beta version', where 'beta' is the second letter of the Greek alphabet, used in software development to denote the second major testing phase.