Dear shahmad
You can check the timeline for recent applications (Mississauga) at the following link -
https://docs.google.com/spreadsheet/ccc?key=0AoMNoUGlfn4mdDliQXNJNUFZZm9PNjh5Z2Rwc1o2cEE#gid=0
Its everybody's guess about the next date for next step/level ....... so chill. Once submitted (& accepted at CIC), we have to wait ... there is no other way.
One should get a letter from CIC informing about the test. I think they send it via email also. And it reflects in eCAS too!!
(eCAS will be like - We sent you a notice on ....... (date)..... to appear and write the citizenship test on ...(date)....
at ...(time).... The notice you will receive by mail will be your official confirmation of your appointment. If you have
not received this notice prior to the date of your scheduled appointment, please contact us)
Cheers, Anil