A free version of Puzzle Quest for the iPhone and iPod Touch has been submitted to iTunes and should be hitting the App Store next week.
Even better, TransGaming tells me that Chapter 2 of the iPhone trilogy will be released for free to owners of the original iPhone title as an update. The free update should be hitting in the next week or two and will include another 20 hours of gameplay for people who purchased Chapter 1.
If you haven't checked it out yet, now may be the time. Fahey seemed to love it.