It wouldn't surprise me a bit if there were some powertrain improvements for the 2014. Here's why:
- The 370's platform mate the Infiniti G is going to be all new for 2014.
- It has been said elsewhere that new engines are being introduced for the 2014 G.
- Nissan likely needs/wants a bit more engine manufacturing economy of scale for these new engines than the G alone can provide.
Solution? New or revised engine for the 370. Let's just hope the new engine isn't a result of Nissan/Renault's recent alliance with Daimler.