LABOCA: this 870 µm bolometer array may be replaced by a wider-field camera A-MKIDs in 2018.
SHFI: the 3 receivers in this instrument may be replaced by new receivers in SEPIA and FLASH with better sensitivity and broader bandwidth.
ZEUS-2: The redshift (z) and Early Universe Spectrometer (ZEUS-2) may be offered as a visitor instrument during future Periods. ZEUS-2 is a broadband spectrograph covering 7 telluric windows covering 200 to 850 µm. For details, see Ferkinhoff et al. (2010).
APEX: a major telescope refurbishment will be done from October 2017 to March 2018. No science observations will be possible in this period. This should be taken into account when requesting time-critical observations.
