The Audio Addicts posted about the release date: http://societyfans.blogspot.com/2007/09/buffy-between-lines-coming-october-6th.html
The Big Bad's intro appeared on the Barely Podcasting show: http://barelypodcasting.com/?p=150
Fred's intro appeared on Podculture: http://www.podculture.net/2007/09/18/episode-65-crux-of-the-matter-part-a/
And there is a review over at Podcast Pickle:
"Probably one of the most anticipated Shows in the Pod-O-Sphere (Least in Mine) It's a return to Sunnydale and the hell mouth in radio drama style. With teasers being released as a build up to the main event, it just adds to it all. Well worth subscribing and watching for, if the teasers are any indication this will be alot of fun."