Yes, this. The liner has been upgraded, but... some of my Bellas have a blue chamois and some have pink. I don't feel a difference between those, but I do still feel a difference between the Bellas and the liner. The fact that I still have the older (blue) version is a testament to the longevity of these shorts. They have been worn for almost 12k miles.
Catrin, I had the Century shorts once, when I used to regularly wear the Terry T shorts (before the Bellas). The chamois is thicker, but once I put them on, it was OK. I wore them on the one and only century I did and that's why I bought them. They were on the edge of too thick, but they did break in well.