VIT and Gate both are 2 different exam and there is VITMEE exam for M.Tech admission in VIT and as of now there is nothing declared for its application form but as per previous year information, it should be released in the month of March and exam will be held in June. Also, if you talk about Gate application form then Gate 2018 application date is already over now in January 2018 admit card will be out.

To know more about VITMEE, you can go through the below link -

https://engineering.careers360.com/articles/vitmee

Good Luck!!!