They have changed it.
https://steemit.com/steem/@steemitblog/steem-0-8-0-released
The five day regen time isn't even the most important part. The most important part is that if you vote within the first 30 minutes some of your curation reward goes to the author.
RE: Hello Steemit fellows Alert Alert,Rewards percentage increase in Voting, What is curation Rewards? Must read this topic to save your STEEM power and increase your Payouts.