Google are now acepting PDF files for their Print programme .
Previously you had to have a physical book with ISBN number then mail it so it could be scanned by the Google team. One of the restrictions have now been lifted and PDF files are now able to be uploaded although it still has to have an ISBN (and consequently) be available as a printed tome through a registered publisher. Follow the title link for the full post.
The one downside is that you have to use Google software to upload the books and it is Windows only. The standard machine for page layout and setup is Mac with Quark so it may not assist all members of the print programme.
For book publishers like me this is a god send and I want to doff my proverbial hat to the Google team on taking a common sense decision on that reduces G's physical costs (I am sure pdf scanning is a lot cheaper as it can be automated) , enables easier delivery for more publishers and I believe will increase the content in your print programme exponentially.
P.S. Google will also be accepting books at the London Book Fair
Email snippet from Google follows, but full info at the URL above
Upload your PDF format books directly
Avoid the extra step of shipping books and upload PDF format books directly.
Go to https://print.google.com/publisher and log in to your account
Choose the My Books tab and click Send Books
Follow the instructions to install and use the application
Remember, you must still upload your book list by choosing Upload Book List from the My Books tab in your account.
Find out what's happening to your books
To give you more visibility into the status of your titles, Google has added more detail to the Book Status page of your publisher account. Titles will now be marked with one of the following states:
Pending: your book is waiting to be scanned
Processing: your book is going through the scanning process
Processed: your book has been scanned and the file has been sent to be processed and included in our index
Live: your book is live; click the title to view the book in Google Print
View your book list offline
We've also added the ability to download your book list so that you can view it offline. Simply click Download report from the Book Status page of your account. Your book list will be saved in CSV (comma separated values) format and can be opened with spreadsheet applications such as Microsoft Excel.
Update your booklist with author information
We encourage you to submit author information about each of your books to make sure that the most accurate information is displayed. Follow the instructions in your account to upload an updated book list with author information included.