According to this story, the Vermont legislature has again amended SB 86. The original bill, which passed the Senate last year, moved the independent deadline from June to August. The House Committee revised the bill to move the deadline in the opposite direction, from June to May. But the newspaper story seems to indicate the bill will not move the deadline at all.
Vermont is tied with Illinois for having the nation’s earliest independent presidential petition deadline. Moving it even earlier would certainly have been unconstitutional.