New Volumes of Yotsuba&! to Be Released?

According to Amazon.ca, ADV's Yotsuba&! volume 4 has a release date of June 27th 2007, and volume 5 has a release date of October 10th 2007. Currently there has been no official confirmation from ADV regarding the new release dates. The last volume of Yotsuba&! (volume 3) was released in 2005,

Source: MangaCast