http://charts.nxtcrypto.org/cDistributionTopAccount.aspxTotal supply of NXT was 999,997,096 and now it's 1,003,000,000+
Somebody found a way to create more NXT (600,000 NXT to 4 million) and have it accepted by the system. NXT is no longer finite but now has Doge inflation until the hacker is caught and stopped.
I believe that is a bug occur on the site calculation.