Interesting interview with Matt Fraction concerning the next few months of Uncanny X-Men and the X-Universe in general. The Giles reference concerns plans he has for Beast, following on from the Endangered Species mini-event.
For those wanting to avoid X-spoilers, Matt talks about using one of the characters that Joss created in an upcoming storyline:
Fraction - "One character is Joss Whedon's. That's right-- Giles is now an X-Man. Okay not really. I wish."