That'd be an obvious assumption to make, but I've been using both IBM and Lenovo versions and I frankly don't see much of a difference. Any concrete examples?
The T410 keyboard from my current model against my old T43.
The screen quality of some T420 here in office.
I disgree. I think they've changed but IBM would have probably followed the same path.
The same staff are designing the ThinkPads apparently.
Maybe in terms of general design towards thinness, but I don't think IBM would have yielded to the display manufacturers when it comes to the aspect ratio of the screens.
I think they would as software is moving towards width over height these days. All my T61's are 16:9 and I'm happy with that.