php|architect to Publish Books

It seems that php|architect will be launching two series of books next year. One, their “php|architect Guides,” will feature books focused on a single, niche subject of 250-300 pages. The other series, presently referred to as “NanoBooks,” will be less than 100 pages (basically, these are described as being like expounded-upon php|a articles).

Since Marco Tabini & Associates are dedicated to ePublishing, I wonder whether these books will see print forms or be available for download only.