Although I was curious, I'm not going to get excited about a new version of TS, let alone a patch, as all previous upgrades have been rather disappointing. I am continuously hoping that N3V will come up with a completely new game engine, giving us better performance, better sounds, real (ie; moving) switches (not to belittle Andi06's switches), and yes; tunnels that can be laid at any angle, and don't "leak" when it rains or snows!; generally, a more realistic simulation. With processor power getting better with each generation, I don't see an issue with increasing system requirements for the next version.
For example; to require a multiple core processor. Or perhaps, different levels of realism based on your computer's specs. For example; World of Subways presents a choice of installation based on computer performance.
FW