O405's are being refurbished first. There's quite a number of
unrefurbished O405s in good condition needing a refurbishment for
its last 2 years stretch before it goes off.
All O405s had been refurbished (with new emergency exits and
repainted green interior). It's just that they re-refurbished the
O405s again with OC interior, and priority seats notice/stickers.
The version of re-refurbishment varies.
Why don't they list down the buses re-refurbished whether they
are Version 1 (TIB426M's style, with the flooring untouched)
or Version 2 (TIB427K's style, with OC flooring)? I only know
TIB438D, TIB444K and TIB448A is re-refurbished with Version 1
style.
But to the main point, SMRT could have refurbished the Lances
even before the O405s started their re-refurbishments.