By the way, one particularly interesting discovery from the trailers/TV spots is that the "S" icon on the superman's suit is not an S, it is actually...Shhhhhh...(sorry, we have no clue at the moment as well, I guess you will need to find it out yourself in June 2013 ;-)),
Short synopsis of Man Of Steel (source: GeekTyrant):
In the pantheon of superheroes, Superman is the most recognized and revered character of all time. Clark Kent/Kal-El (Henry Cavill) is a young twenty-something journalist who feels alienated by powers beyond his imagination. Transported years ago to Earth from Krypton, a highly advanced, distant planet, Clark struggles with the ultimate question 'Why am I here?' Shaped by the values of his adoptive parents Martha (Diane Lane) and Jonathan Kent (Kevin Costner), Clark discovers having extraordinary abilities means making difficult decisions. When the world is in dire need of stability, an even greater threat emerges. Clark must become a Man of Steel, to protect the people he loves and shine as the world’s beacon of hope – Superman.
Now, enjoy the trailers/teasers and TV spots of Man Of Steel below.