The status of the CMS pixel upgrade detector

The present CMS pixel detector was designed for a maximum luminosity of $1\times10^{34} \mathrm{cm^{-2}s^{-1}}$. Following the Phase 1 upgrade of the LHC, the peak luminosity is foreseen to reach $2\times10^{34} \mathrm{cm^{-2}s^{-1}}$. Due to the radiation damage and large data losses in the readout chip the present pixel system must be replaced by a new one in the extended year-end technical stop 2016/2017. The current status of the CMS pixel detector upgrade project will be presented. The new features of the proposed detector that will be discussed are the ultra-light mechanical design with four barrel layers and three end-cap disks, the digital readout chip with higher rate capability, and the new cooling system.