serangoon int has to wait for approval frm ptc and lta to
operate in nex
clementi int, if i'm not wrong, still building 
bedok int, they demolishing the hawker centre and are building a
shopping centre in place of it with the interchange inside. will
happen in the near future
for buona vista, which terminal are you referring to? ghim moh
or buona vista? but actually, no plans for upgrading either of the
two interchanges
Serangoon dunno have to wait until when
Clementi hope it will be done soon
Bedok Any idea which year, I saw the news also
Buona vista no hope la aha