Sorry for my mistake I made. I mentioned earlier that the
station in second and third picture is Dakota station. But this is
incorrect. Sorry for causing confusion. 
Actually, I heard this wrongly when watching the TV news. So I went
back and re-checked this. The increase in cost of sands and granite
has impacted on the contractor constructing Dakota, Mountbatten and
Nicoll Highway station. Nevertheless, the contractor is still
working closely with LTA to keep the construction of Dakota station
going on.
Only 4 stations (Dhoby Ghaut, Bras Basah, Esplanade and Promenade)
are completed and will be handed to SMRT at end of this year. So
right now, 10 stations are currently in fitting-up work phase. They
are Stadium, MacPherson, Tai Seng, Bartley, Serangoon, Lorong
Chuan, Bishan, Marymount, one-north and HarbourFront.
So I think the first picture is Tai Seng station. 
And then the station in second and third picture is indeed Stage 3
station. 
