Near Future Predictions for HR
Because HR is at the core of business and is also one of the more subjective, sensitive, and idiosyncratic elements of it, there is a reason why the current ecosystem has evolved the way it has. In the near future, I see no reason why the ecosystem [RPOs, ATSs, vertical search, general search, specialist job boards, sourcers, etc.] will change dramatically. What will shift is the architecture.
The current database structures, lack of a service-oriented architecture, and poor storage/retrieval/processing systems deployed by the major players in HR are simply not up to the data demands that will be put upon them to compete in the near future. Globalization, atomization of roles (skill oriented, distributed, project based), growth in signals to process, and new speed requirements, all require more nimble systems. Most current companies won't make the necessary changes and will be ill-positioned to compete.
Within 5 years, mobile will be the dominant platform for recruitment. Just as the Tablet computer was heralded as the next device but never caught on until, overnight, the iPad turned that form factor into a multi-billion dollar business, the same will hold true for mobile. The necessary infrastructure isn't quite in place, but there are some very smart companies that are building all of the elements required to make it work. Once the last part of the tech stack is built, overnight, mobile will quickly overtake the PC. There are just too many inherent advantages to mobile for this not to occur.