Saw it 2 weeks ago in non 3D as all the theatres were sold out for it.
I thought it was the perfect ending to the franchise and hope to god they don't try to resurrect it 5-10 years down the line. Will be buying the bluray 3d dvd when it comes out :0)
Loved the first two - and I went to the cinema to see the second one, it was a bit embarassing as me and my mate were the only people in the queue without kids..........
It's a great film and as already said the perfect way to end the series (unlike Shrek forever after, a Shrek too far) and has some genuinely touching moments as well.