I saw a trailer on the cinema for this absolutely months ago, close to the beginning of the year, and I thought it looked quite good and funny. But the trailers on the TV just seem to be focusing on the little minion guys, as if that is what it is all about. Which makes it look quite rubbish - I think the Promotional people have gone with the concept of attracting children to the film so the minions are shoved in our faces.
The original trailer I saw made the film look a lot better in my opinion.