The USCIS page to Check Case Processing Times, which updates at irregular intervals, has just published dramatic new time estimates for EB-5 forms.
I-526 Processing: Estimated time range of 29 to 45.5 months (the previous update gave a range of 22 to 28.5 months) I-829 Processing: Estimated time range of 25.5 to 40.5 months (the previous update gave a range of 30 to 38.5 months) I-924 Processing: Estimated time range of 22.5 to 44 months (the previous update gave a range of 16.5 to 21.5 months)