The anime version of Card Captor Sakura will be released in Blu-ray format next year by Geneon Entertainment.

Card Captor Sakura – Clow Card – Blu-ray Box (episodes 1 to 46) will be released on March 27, 2009 (65,520 yens),

and

Card Captor Sakura – Sakura Card – Blu-ray Box (episodes 47 to 70) will be released on June 26, 2009 (39,480 yens).

This version will be a limited one and its production will last until March 2010.

Card Captor Sakura is the first CLAMP anime to be released in Blu-ray format.

Thank you romanchan for letting me know about it!