1)I don't think that many will find their way to 
the public. It's the same with other new CG 
anime... nothing really interesting available...

2) Fact I'm more into collecting cels, probably 
not much. 

3) 0% - Fact is that Clamp never showed up in the 
public the last years. There are even no offical 
photos available of the girls.
A highlight is the release of the two new 
artbooks "South Side" and "North Side". While 
South Side" will be realease at the Kadokawa-
publishin house, "North Side" will be released at 
the Kodansha-publishing hose.
For this event there is a kind of lottery, who 
wins can meet Clamp an will get ONE sign into ONE 
of the two artbooks. Only 150 people will get 
this possiblilty chances are similar as winning 
in lottery...