This chapter undertakes a brief review of the feasibility of expedited arbitration for investment disputes, given their peculiarities and complexity, noting that, at this time, this is still work in progress.  This is done with reference to the ICSID Amendment Process, as well as to the work of UNCITRAL Working Group II, although the Group is still to decide on whether the proposed expedited rules would apply to other types of arbitration proceedings than commercial ones. Before advancing to these core issues, the chapter will first take a look at expedited arbitration provisions in institutional arbitration and identify some key unsettled issues, which are either likely to emerge or are already addressed in the UNCITRAL and ICSID discussions.