IBM will slide further down
Within the next 18 months, four top 100 Power systems will be decommissioned in the UK. The larger two are going to be replaced by Cray systems, and will probably not be on the November 2014 list. The vendor for the replacement of the other two has yet to be decided, but the expected decommissioning date of those IBM systems is sometime in Q3 2015.
But one thing is likely. That customer will probably not buy a system from a Chinese vendor!
With the apparent lack of a follow-on to the p7-IH systems, IBM will have to rely on the BlueGene and bespoke systems. I have heard nothing about a successor to BlueGene-Q, and I'm afraid that I believe that PureFlex systems (with the chassis, power and networking components made in China and probably branded Lenovo) cannot cut the mustard when it comes to very large systems.
This means that as the existing IBM x86_64, hybrid, BlueGene and IH systems age and either drop down the list, or are decommissioned, IBM's rank in the HPC world will drop.
And from what I have heard, IBM may not even be able to act as an integrator for HPC systems made from components bought from other manufacturers, as many of the people involved in the bidding, design and implementation of the currently installed systems are on the list to be transferred to Lenovo!