According to the Twitter from Otsuka Masahiko, chief executive of studio Trigger, the anime "Little Witch Academia
" will get a sequel. No more details have been released yet.
Update July 8th
A Kickstarter page has been created by studio Trigger to increase the total episode length of the sequel: Little Witch Academia 2 Kickstarter
Source: Twitter of Otsuka Masahiko
Little Witch Academia 2