It only states: if you would like to volunteer for the offer, please access the VSP Acceptance Tool between now and 5:00pm on May 09, 2016 and follow the instructions to complete your acceptance.
After go that link, it shows a selection button and a statement: you are eligible for the VSP. You can submit your decision between now and 5pm (local time) on Jun 2016.
There is no details of package to help make decision before selection, this is really UGLY