Went to look at a hatchback (it was a 2017 LT with RS package) and took it for a drive yesterday to get a feel for the hatchback model. I loved everything about it. Very much looking forward to the Diesel release. From what I've read, it looks like it'll be out for the 2018 release and be available with a manual transmission. This is the car I've been saying for ages that I would love to have; now here it is.
I figured I'd start this thread for others who are interested in the same or similar combination. We can post info about the model here and just share general knowledge we come across that we and others can reference off of. I talked with the salesman I bought my 2014 Diesel off of and he said he should have more information about it (for a Canadian release anyway) in the coming week or two. Another salesman there who was a diesel aficionado to say the least was able to provide some insight into it. He said a GM exhaust engineer was at the dealer and he was talking to him about it and the new engine coming out for 2018. It's going to be a 1.6L turbo whisper-quiet diesel engine that delivers power that will be pleasantly surprising to some.
I'm looking forward to the package options for the 2018 release rather than being stuck with the premium model the 2014 Diesel was bound to. But in all honesty I'd probably go with a leather package anyway. The LT with the base interior wasn't really working for me.