In the image above we can see all the presentation dates for the CLA, A-Class, E-Class, S-Class, GLA and C-Class. Besides that we also known when the sales for those cars start.
CLA
Official presentation: January 14, 2013 (In reality it was revealed earlier)
Sales start: April 12, 2013
Official presentation: December 14, 2012
Sales start: April 13, 2013
E-Class Cabrio/Coupe
Official presentation: January 15, 2013 (In reality it was revealed earlier)
Sales start: May 18, 2013
S-Class
Official presentation: March 26, 2013
Sales start: July 27, 2013
Official presentation: February 2013
Sales start: June 2013
GLA
Official presentation: To be announced
Sales start: March 2014
C-Class
Official presentation: To be announced
Sales start: March 2014
Be sure you will be able to see those new cars for the first time here, in AutoMonthly, probably even before the announced dates.