Don't you mean stabling? Stabilizing is a different thing
altogether. 
As far as I know, no other Circle Line stations will be
triple-tracked. Bedok Town Park station on the Downtown Line will,
though, also for terminating trains to return to KCD.
I'm not sure which "stable" I'm referring, but you get what I
mean :P
And yeah, no other Circle Line stations will have 3
platforms.