Yep, a worthy consideration.
My thoughts have been that this generation of device has been pretty solid, and I think we might not see a major change of form factor for the next model, especially if it is released sooner than later with Broadwell.
Given where things are at in the hardware and software release cycles, I think there is a decent possibility that they may try to delay for a release with Windows 10 and Skylake which will definitely be an appealing upgrade, but that won't be until late this year at best.
My thoughts have been that this generation of device has been pretty solid, and I think we might not see a major change of form factor for the next model, especially if it is released sooner than later with Broadwell.
Given where things are at in the hardware and software release cycles, I think there is a decent possibility that they may try to delay for a release with Windows 10 and Skylake which will definitely be an appealing upgrade, but that won't be until late this year at best.