Hey Vish
You sign into cic.gc.ca, and application status on the right, there you are checking the status of your application with your receipt number from when you paid for your application. Its a letter and a 9 digit number, and you use all the sponsor info (last name, first name, dob, and place of birth). If there's an update it will be there, if they have started processing it, it will say your info couldnt be found. The first update I saw was on 9th Jan saying a decision had been made on the 6th.
Hope this helps!!!!