At the risk of venturing further OT, I have heard the same for the Volt. March 2019 is the end of the line. Probably several reasons:
1. Tesla Model 3
2. Chevy Bolt cannibalizing sales (100% electric and goes almost as far for nearly the same price)
3. GM re-structuring to go after Ford on truck/SUV front (no more sedans)
4. Charging infrastructure is growing fast.
In my area when talking EVs, it used to be the Volt as a recommendation for single-car owner that does both short trips and occasional long trips. Now, the recommendation is almost always Model 3 or used Model S (with the occasional Prius/C-Max for serious road-trippers), and the Bolt for someone who stays fairly local (Tesla's charging network is tough to beat).
It won't be long until the Model 3 is the only American brand sedan that anyone will be able to buy. Ford stopped all cars except Mustang for 2020, Chevy's gutting it's lineup (Impala is the latest victim), and Dodge only has the Charger, Challenger, and Ram as it's entire lineup.
To bring this back on topic a bit, Mitsubishi has been pretty good at replacing defective/failed packs (won't charge to 16 bars), but expect a challenge when trying to get a replacement due to reduced range (still charges to 16 bars, but doesn't go far), considering that most of us had to sign a waiver acknowledging the differences of what's covered under the battery warranty. I still wonder when 3rd party cells will be available. Shouldn't be too difficult to pack a box with 18650 or 2170 cells, although I'm personally not too concerned about that at the moment since I've designated my i-MiEVs as collector cars and both are parked for the winter. The Bolt is my daily driver now.