No, in fact they are getting more difficult.
Look at some of the 4/5 mark short answer questions in 2004 and compare them to 2013, you'll notice previously a lot was focused on basic content regurgitation (explain, describe etc). More recently a stronger emphasis on analysis based questions have been implemented so just memorising content won't get you a b6 like it did before. I'm focusing more on short answer/essay based questions and so multiple choice may have gotten easier, i'm not 100% sure.