April 1, 2018 - Github
Vitalik Buterin, co-founder of Ethereum and co-founder of Bitcoin Magazine announced today a possible hard fork that will alter the total max supply of Ethereum.
He states on Github "In order to ensure the economic sustainability of the platform under the widest possible variety of circumstances, and in light of the fact that issuing new coins to proof of work miners is no longer an effective way of promoting an egalitarian coin distribution or any other significant policy goal, I propose that we agree on a hard cap for the total quantity of ETH."
As it currently stands, Ethereum has a total current supply of 98.557 million coins in circulation. In the long run, setting the total supply at 120 million would allow for economic sustainability following the move to a new algorithm after the hard fork. A move like this shows signs of maturity among the Ethereum project and a more familiar number to calculate.
What's important to know from this article is that this is still simply a 'proposal', nothing is set in stone quite yet. With these proposals will come change and Ethereum developers and consumers must embrace that change. This change would be a huge milestone for the protocol's overall design and usability.
The next hard fork (phase 1 Casper) will alter reward distributions and will ultimately change in-protocol rewards like mining, staking interests, and staking rewards.