For anyone who is interested.
I flew out of SIN two nights ago and saw that they were already commencing work on the extension of the current Singapore J lounge.
They are extending from the wall on the side of the children play area.
The extension will take up some of the public area (currently on the land side) behind the current wall.
Did not have time to check out the progress of the 1st lounge since that is situated near the D gates.
Currently I am frequently using the EK lounge because of the over-crowding of the QF lounge.
There were never more than a handful of guests in the EK lounge whenever I am there and it has nice views of the runway and the roof-top garden.