If you go to the English Mahouka Wikia they show the complete Vol.24 cover with pic and title. The one on dengeki only shows the cover pic without the title and everything. Vol.24 will be released March 10th and Vol.25 on April 10th.
Here's the link to Vol.25
http://dengekibunko.jp/newreleases/978-4-04-893792-4/