The coolest thing is the mirror finish spray-on bore coating (similar to the GT-R). Nissan Article
here. Here is a great read but lengthy and in
PDF form.
The rest of that four cylinder engine was debuted six years ago and it has almost everything current that a manufacturer would need.
The really neat thing about the dynamics of this choice is that the
entire Sentra fleet is to receive this engine. This business scheme was not attempted by Nissan at any point since the SE-R models have only been available for purchase through the "upgrade" of a different model. Examples being the B13 chassis with the GA16DE engine and the SR20DE engine and a variety of trims. The B14 chassis carried the same scheme as before and then the B15 continued on with this scheme in the QG18DE and QR25DE engines. I think that is kinda neat. This scheme should at very least provide more parts to be available for cheaper to the consumer in the end.