Homebrew package is updated to the version 0.12.0.
Hardfork scheduled for 2016-07-26 15:00:00 UTC
To update your installation you need to:
Step 1: Update Homebrew:
brew update
Step 2: Reinstall existing Steem installation:
brew reinstall steem
PS: If you don't have Steem installed, just use the following command:
brew install TigerND/core/steem