Hmmm... It looks like touchscreen support on Linux as whole is sporadic at best, and it doesn't look like it's something that's been officially addressed. I'm also very much interested in touchscreen support, as I plan on installing Mint 16 when it comes out at the end of the month. I don't, however, have time to spend trying to fix the touchscreen if the drivers don't work properly, as this is a laptop I use for college; I need it to work out of the box. I'm running a Lenovo Yoga 11, if it's relevant.
I'm actually surprised that Mint hasn't implemented these drivers in the newer releases, as it would appear people need to install additional drivers in order to gain this functionality on Mint. Many people turn to Linux to replace Windows, and I'd like more than anything to replace Windows with Mint. However, without proper touchscreen support (especially seeing as it's nearly 2014), there really isn't any competition.
I really hope there have been improvements to this.