Lupins Role in Book 7?

[Someone]

No: HPFGUIDX 126922


Hi, guys. Just a question for the old-timers (pre 2001 fans), or 
anyone else who's interested. Does anyone remember JKR saying, in 
response to a fan's question about whether Lupin would reappear in 
future books, that, yes, we'd see him again in Book 5, but that it 
was really in Book 7 that he'd have his day, playing a "really 
massive role" (or something like that)? 

I read this somewhere in, I *think*, 2001 (it was, at any rate, 
during the dark ages, post-Gof but pre-OOTP), but I can't find any 
interview transcript of it over the internet, and I'm damned if I'm 
going to wade through four years worth of posts on this site. 

I know a lot of rubbish is written on the web; that's probably the 
case here as well; but anyone want to confirm/deny the existence of 
this phantom comment?

John.