GF is my all time favourite. I love the violets and the way they are incorporated into the symphony. It disappeared for quite a while in Australia, but it resurfaced a couple of years ago and I was ecstatic. However, I don't detect any change. Luckily.
However, I did purchase a bottle of Caron's Third Man recently. Another big favourite. My impression of that matches yours of GF. An oh so subtle difference. The bottle has changed dramatically too.