The next generation of HighFinesse Wavemeters are the unsurpassed high-end instruments for wavelength measurement of pulsed and cw laser sources. With an absolute accuracy of 2 MHz and a measurement resolution of 200 kHz, the WS8 is the ultimate solution for frequency monitoring and stabilization tasks. Its high performance meets the needs of scientific research, telecommunications, and optical metrology. Latest improvements entail a new robust housing, a better GUI experience and Linux support.