Beginning January, Random House will begin marketing its print on demand titles. The Random Collection will debut on a dedicated website with an initial launch of 705 titles. The POD titles appear to be out of print books and not a pay for service (i.e., you pay Random House to be your POD service ala Booksurge) but if Amazon can offer those services, why not Random House? It's a way for RH to expand its market with an area that has large profit margins.
National Book Network is going to offer print on demand, short run (no idea what that is) and digital conversion for the Kindle. The digital conversion comes at no cost to the author so long as the title has sold fifty copies on Amazon in the last year. NBN is in discussions with other ebook wholesalers/retailers such as Sony and OverDrive.