According to Weekly Shonen Magazine and Weeky Shonen Sunday, Negima movie
and Hayate no Gotoku! movie
will be premiered in tandem on August 27th. The titles are "Mahou Sensei Negima! Anime Final" and "Hayate no Gotoku! Heaven is a Place on Earth". It's unusual that two competing publishers collaborate with each other on their anime movies.
Negi Hayate movies official website
Source: Scan of the two magazines