The current recommended version of the software for mainnet is [v0.8.1](https://github.com/Kava-Labs/kava/releases/tag/v0.8.1). Note, the master branch of this repository contains development work since the last mainnet release and it may **not** be runnable on mainnet.
The mainnet upgrade to `kava-3` took place on June 10th, 2020 at 14:00 UTC. The version of Kava for `kava-3` is [__v0.8.1__](https://github.com/Kava-Labs/kava/releases/tag/v0.8.1).
Migration instructions can be found [here](https://docs.kava.io/building/kava-3-migration-guide.html).
The recommended version of the software for kava-testnet-6000 is v0.8.0-rc1. For further information on joining the testnet, head over to the [testnet repo](https://github.com/Kava-Labs/kava-testnets).