They had gotten into this groove (or rut) of opening major rides on even years and minor ones on odd years i.e.: MANTIS '96, Chaos '97, POWER TOWER '98, Camp Snoopy '99, M-FORCE '00, etc. At some point they did a double coaster year when they added WT- in my opinion they copied the wrong ride from GL! So they are now on major odds and minor evens- though if you are a kid- Camp Snoopy was a major addition and they got Woodstock Express out of it which is a nice coaster to transition from JG to say Wild Cat or Iron Drag.
Going just on this predictable track record I would definately say that it won't be much and they even said anything yet whereas when I worked there in '99 much work was being done on Millie before HE opened (ships get to be girls- coasters can be boys).
Of the road, but still in a truck...By the way, that's my dog Millie (named after Millennium Force) over there to the left!