First Iteration of Ethereum Metropolis Hard Fork to Appear Monday
The Ethereum Foundation and other developers in the open source development community of Ethereum are ready to roll out the first iteration the Metropolis hard fork proposal by next week. According to Jordan Daniell of ETHNews, the Metropolis hard fork is set to be executed in two separate phases. The first iteration of the Metropolis hard fork is called the Byzantine hard fork, a solution that is expected to minimize the actions of bad actors within the Ethereum ecosystem. The Byzantine hard fork will be integrated into Ethereum’s testnet on block number 1,700,000, which could be as early as Sept. 18.
Full article here: https://cointelegraph.com/news/first-iteration-of-ethereum-metropolis-hard-fork-to-appear-monday

Thanks for sharing this information, do you have an idea about when they will change to proof of stake?
They have been working on this transition already for a while, there is no specific date yet, earliest news was saying should be sometime in November 2017, there are not many official updates online on this subject at this moment
Thanks for the update.