Not good news. I was expecting them to swap out some of the SDs
on Sv 39 for DDs in the coming month~ Ditto for other SMRT svcs
like Sv 851.
At this rate, I think high chance Sv 39 getting another fleet
add in this Q1 already. Its frequency is worsening drastically in
both directions during Peak Hours since school season restarted.
Quite common to see a 20min wait between buses somewhere in either
direction during Peak Hour since school started this year. It's
like somehow the loadings for Sv 39 massively increased this
year.
And, isn't Sv 39 still in the BSRF scheme? 
I think loading on most Yishun bound services has increased
(sparing sv 85), given the huge # of BTOs that opened for residency
in 2014 and continue to do so in 2015. Even sv 965 loading has gone
up.
As for sv 39, I think they might stick it out for another month
and then upgrade 4-5 slots to DD for sure. Right now has only 1
BSEP in its fleet, so quite possible, LTA might give it a DD fleet
add in March, once Yishun temp opens.