There's actually some
water in his guess (if you get what I mean). There's already the
strangely-numbered route 985 from nearby Choa Chu Kang, and feeder
routes in Bukit Batok have already been renumbered into the 94-
series. I don't see why they won't use the number 986 if a
renumbering excersise takes place.
Oddly, feeder routes in Choa Chu Kang retain their 300-series
designation to this day, when you could have expected A$$MRT to
make them in the 800s or 900s. Also, notice how the old route 181
became 961 (to fit it into the other Woodlands trunk routes), while
nothing was done to routes 169, 178, and 858?