Tsubasa volume 15 will be out on 14 July'06 , in japan though [so sorry for the very very small pics ><)
the cover for normal one is

hmm...in school uniform, where's Fai and Kurogane, not to mention Mokona

and for deluxe edition cover is

wowww ...it's amaterasu (kendappa-ou from RG veda) turn now. Has anyone realised that from vol 11 to 15 the characters cover for the deluxe edion is all from RG-veda

, i wonder who's next