The Message section of CLAMP-NET.COM is being updated randomly since its debut on April 1st.
Today Nanase Ohkawa posted a message about the script of the Holitsuba Drama CD that is planned for later this year:
OAD prize script. The amount of twins is no longer increasing (laughs).
It is unclear to me, though, if that means there won’t be additional twins in this Drama CD or if this was the last addition (since this will probably be the last Holitsuba Drama CD).
The Holitsuba Drama CD is a special prize for those who purchase one of the two XXXHOLiC or Tsubasa OADs and is slated for September.