I haven't watched in years, but from what I've seen- they've moved to their movie-style CGI for their television series as well. Can't say I like the choice, I grew up on that model railway style, and will always remember it as such.
What's worse are the toys. I went to Toys R Us (Back when it wasn't yet kill) because I wanted to get my little stepbrother a wooden Thomas train for his birthday. I figured that not too much had changed since when I had stopped playing with them (Besides some new engines or more complex features). I was wrong. They've seemed to have gone for a chunky, minimalist look for the new generation. I have a whole box of my old Thomas trains stored away in a room in my mother's basement, and seeing that convinced me to never let them go. If I ever do get around to starting a family- they ain't playing with the shit I saw in that Toys R Us.