Here is my list:
171 --> Yishun Interchange <> Beauty World (loop)
67 --> Tampines Interchange <> Newton Circus (loop)
986 --> CCK Interchange <> Beauty World (loop)
new service replacing sv 67
between CCK and Upper Bukit Timah road
Future
rationalizations:
sv 66 once DTL3 is up (Bedok -> Newton Circus (loop), new
service to replace Jurong East - Beauty World sector). sv 700 to be
extended/modified. sv 961 to be replaced by another service between
Lor 1 and Queensway but deleted between Woodlands and Queensway
(alternative: 170, 960).
66 to break it into two.
66: Bedok -> Newton Circus (loop) via Keng Lee Road and new
Airport Road direction.
466: Jurong East -> Serangoon Road (loop) via Bukit Batok
towns
It could be a possibility if LTA wants to divert 66 twice.