One of the main differences recently is on the use of new technology and apps, which is an exciting prospect for many.
For example, there's an iphone in use at Hever Castle to help take you to places which are inaccessible by wheelchair. Of course it would be even better if they mentioned this in their Access Statement, but this may just be an oversight?
At the National Trust property Knole House, they have a tactile model of the property, and have incorporated British Sign Language (BSL) and subtitling into their introductory video. This is all mentioned in their Access Statement, along with all of the other aspects of visiting for disabled and older people. Well done them! If you wanted an example of good practice - this could be the place to look for ideas.
I've visited many attractions to give advice in recent years, so if you're looking for an unbiased opinion about your particular property, I'd be happy to help :-)