Third Season of Shugo Chara! Announced [Updated Aug 26]

According to Toradayo. magazine vol.103, the third season Shugo Chara! was announced to start on October 3rd. The title is "Shugo Chara Party!".

Source: Toranoana

Updated on Aug 26
According to Nakayoshi, the new program "Shugo Chara Party!" is composed of an anime part and a live-action part. The title of the anime part is "Shugo Chara!!! Dokki Doki". A short spin-off anime series "Shugo Chara Pucchi Puchi!" will also be started.

Sources:
Scan of Nakayoshi
Scan2 (the teenage idols of the live action part)