In further developments that I have heard about on the grapevine - i.e. I found out on the net, not via my publishers - that The Gnostics is also receiving the paperback treatment in December. I'm not sure at the moment whether this will be an updated edition or not.
And while on the subject, there are distant rumours of a new edition of Andrei Tarkovsky planned for 2010-ish. (Further distant rumours suggest that I have in fact finished New Waves in Cinema at last. These rumours are sadly unfounded...)
In the meantime, you can always investigate the works of the great UFOlogist John Keel, who has just Left the Building. Recommended titles: The Mothman Prophecies, Our Haunted Planet and Operation Trojan Horse, while Patrick Harpur has some interesting things to say about him in Daimonic Reality.