[scala] 2.8 questions

A few 2.8 questions:

Are there parts of 2.8 that are pretty stable that Scala team would like
feedback now on, such as on the collection API?

How does the Scala team want 2.8 feedback?  Emails to a mailing list (which one)
or formal tickets.  I already have a few comments I would want logged somewhere
for someone to take a look at.

Regards,
Blair