I was talking with two of the Madhouse guests 
from AX a couple days ago, they said they will 
phrase out cel production by next year.  Madhouse 
Studio is currently changing digitally by using 
computers for most of the current and future 
shows.  They said they're planning 2 or 3 anime 
series based from CLAMP works.  

They also said the majority of anime studios have 
already changed into using computers.  The era of 
cel production will come to an end very soon.