178 and 964 definitely have a change in depot, from WPDEP to
WLDEP.
As for 856, I think it is still under WLDEP, because judging from
the recent cameos, they are mostly from service 187, 964, while the
856 buses cameo-ed on WLDEP services.
Instead, 963 got a change in depot. As SMRT annonuced two months
ago, 106, 188, 190, 850E, 951E, 960, 963, 966, 972 will receive the
BSEP ADL E500 MMC buses. Yup, and 188, 951E, 960, 963 will get
their enviros soon, likely to be on 22 September 2014. In order to
park those enviros, they need to have a depot change. So 178 and
964 got a transfer in depot to make more spae for 963 buses.
However, 169 also has a change in depot as well...with effect
from 24 August 2014, all 169 buses will do overnight parking at
Woodlands Bus Park Depot (WPDEP)...
