Minicon 53 will be March 30-April 1, 2018. It will be chaired by Emily Stewart and Kevin Austin. The pre-reg deadline is March 5, 2018. Check back later for a real webpage.
Probably you want to go read about Minicon 52, which occurs in 2017.
If you want to get a head start, here's a registration form. Online reg will appear here around Minicon 52.