SMRT has introduced 6 more Premium services with effect from 8 September 2008. In summary:

Service 586: Bukit Panjang Ring Road - Jurong East Central
Service 589: Sunset Way - Fullerton Road
Service 590: Choa Chu Kang Crescent - Shenton Way
Service 597: Toa Payoh Lorong 2 / 1 - Shenton Way
Service 598: Petir Road - Shenton Way
Service 599: Hougang Street 51 - Shenton Way

For more information, please view the SMRT official press release at http://www.smrt.com.sg/upload/SMRT_buses_rolls_out_six_new_Premium_Bus_S...