According to Comic Natalie, the DVD of Hayate no Gotoku! Heaven Is a Place on Earth
will be released on December 16th. It will be bundled with the 31st volume of the manga. In the 30th volume, Nagi said it's up to the sales of the DVD of the movie whether the new anime of Hayate will be a TV series.
Sources: Comic Natalie
, Scan of Hayate vol.30