Operators are wary of ending 2017 without adding a 4K launch to their CVs; fearing being branded video laggards. The latest is Polish satellite TV operator nc+, which handed its long-term Swiss set top and software supplier ADB a big contract upgrade as the operator rolled out its new 4K UltraBox+ last week. In the process, it appears nc+ has found itself a mystery new hardware supplier, after ADB sold off its manufacturing business around three years ago. A key reason for the wave of 4K set top announcements is the increasingly affordable prices of 4K TV sets, likely to drop even further in the coming weeks in the run up to the festive period. However, while operators are upping…