The anime episodes for Tsubasa Shunraiki \ xxxHOLiC_Shunmuki are available for download via torrent or direct download.
A 4 part OVA will be released with limited editions of the Tsubasa and xxxHOLiC volumes.
There will be two OVAs for each series, with plots linked together.
What material they cover has not been confirmed yet.
The first part of the OVA will be available with a special edition of volume 26 of the Tsubasa: RESERVoir CHRoNiCLE manga.