Things that have been implemented:
Instantaneous Annual Inflation set to 9.5% (except for Steem Dollar variance / interest)
75% of inflation awarded to reward pool
15% of inflation awarded to Steem Power
10% of inflation awarded to witnesses
top 19 witnesses receive 1/5 the pay per block of miners and runner up witnesses
no more reward for including a POW transaction in a block
price feed median period changed from 7 days to 3.5 days
Steem Dollar conversion delay changed from 7 days to 3.5 days
source @ @dantheman/steem-economic-changes-update
follow @craig-grant