It is described on the event site as such:
Hulkageddon is a semi-regular event which takes place in the MMORPG game EVE-online.
During the event contestants vie with each other to see who can destroy the most mining vessels within a given timespan.
This is the 3rd edition of the event, which hopes to top the previous one, that ended with the destruction of over 1,200 mining vessels.
The event even has a sponsor this time around, in the form of EVEPress. I’m not sure what form that sponsorship is taking exactly, but their name and logo is on the side bar and they have a pop-up announcing the event on their own site.
No word on the start date as yet, beyond the phrase “extremely fucking soon.”