The consolidation and upgrade of the LHC accelerators complex is expected to yield a progressive increase in peak luminosity L, exceeding the value of L = 1034 cm−2 s−1 (original design figure) after about 5 years of operation, to eventually reach values close to L = 1035 cm−2 s−1 (the so-called Super-LHC). All the experiments will have to make some upgrades to be able to operate at Super-LHC. This article makes a short review of the CMS tracker sub-detector research activities in this direction: we will show the time framework of the evolution plan of LHC, what are the limiting factors of the present-day detector and which requirements come from the luminosity upgrade. We will also describe the main results of the research activities already in place in the field of: sensors, power supply, cooling, layout design and simulations.