As multi-level coherent optical signals become more prevalent, flexibility of an arbitrary waveform generator becomes a vital requirement. Together with RFXpress, the Tektronix AWG70000B Series is capable of generating current and next-generation multi-level signals. In complex development test scenarios, engineers and researchers need flexibility to accurately recreate real-world signals and cycle through fast-changing signal tests quickly. Tektronix is bringing new Streaming Waveform ID functionality to its family of high-performance arbitrary waveform generators and doubling available waveform memory to 32 GSamples. The new capabilities of the AWG70000B provide significant advantages for replicating the chaos of the realworld during simulation exercises and evaluation of modulated signal formats.