This news comes from the latest column of the editor of Tsubasa, Kiichiro Sugawara, published monthly in the members area of CLAMP-NET.COM.
Sugawara reveals that the 2nd Tsubasa artbook will be released somewhere during November in a simultaneous release with volume 28.
The artbook will contain CLAMP’s comments on all illustrations (like the 1st artbook), cover with new illustration drawn by CLAMP, two short comics and the price will be 1,890 yens.
The first highlighted paragraph says that the new Kodansha magazine, Bessatsu Shonen Magazine, will have congratulation comments from CLAMP. The magazine is out on September 9.
Hummm if the artbook will be released along with volume 28, does that mean that the illustrations of volume 29 (and any further volumes that could come after that) won’t be carried in the artbook? O.o What about the XXXHOLiC artbook? My bet is that it’s gonna be released around the same time too.