How to name a product rewrite, without raising too high expectation?

We are rewriting a product named « Module A » with a new technology for thousands of B2B users. It will be iso-functional. This rewrite will open new posibilities on the long run.

We would like to release this new version, while keeping the current version open, in order to gather feedback as soon as possible.

If we name this new version « Module A (V2) », it will raise too much expectation. I though about « Module A (Beta) » but it's not very clear. I guess I'm not the only one who's been through this.

How did you solved a similar problem ? Do you have any idea/documentation?

Thanks