Yup, as the GP on both occasions has came close to the 2 hour limit, seemingly they want it to be shorter in lap time. Cutting that loop off will take as much as 25-30 seconds off tha lap, with a change in ammount of laps, posibly taking it down to arround 275KM plus 1 lap, simmilar to what Monaco is also lookins likley. The Singapore track will also see some corners tightened as well to make the lap time longer.
The yelow section has been mooted as well, but looks unlikley as that will see the track loose a 5,000 seater stadium and places for 3 large screens for the spectators.
Seemingly it has been seen by the teams as a popular move as it will see the cars not go accross the Anderson Bridge that many drivers have voiced saftey opinions about last year.
There is one other option, and thats where Esplonade park is, and thats to make that into F1 track, with a 90% smaller loop installed there, simmilar to this, so there can be some tempoary seating installed on the green there, but could be potentially unpopular;