This just in: Vaccinated travellers from Thailand, Cambodia, Fiji, Maldives, Sri Lanka and Turkey will be able to come to Singapore quarantine-free under the VTL scheme from 14 December 2021. By Jocelyn Tan
The addition of these six vaccinated travel lanes (VTL), including Thailand and the Maldives, will bring the total number of countries eligible for quarantine-free travel to 27.
Countries open for Quarantine-free VTL from Singapore

As of the time of writing, Cambodia, Maldives, Sri Lanka and Thailand have already opened their borders to general quarantine-free travel for vaccinated travellers — Thailand and Cambodia, for instance, has already opened quarantine-free travel to fully vaccinated Singaporeans since 1 November and 15 November respectively.
These 27 countries contributed to 60 percent of the total daily arrivals at Changi Airport, pre-pandemic.
For more information about the VTL, head to the link here.