Update :
Date of Application: 18/03/2016.
City Council/State: Regional NSW.
Application Mode: Online.
Acknowledgement date:18/03/ 2016.
23/03/16 got a email form Immi asking to send a copy of original birth certificate
(I only upload the translated) and Form 1339 before book for test
Email for Citizenship Test/Interview: 07 April 16
Test date : 05 May 16
Approval letter : received by AU Post 10 May 16 (dated 06 May)
Ceremony : 23 June , (confirmed by a email and informed council will send invitation 2 to 3 weeks before ).
Just over 3 months for start to end ....
Good luck all