The most distinctive feature of its face is the new grill which occupies most the car's front, giving the car a wider stance. The headlights have become more angular than the current car too.
We can't say much about the rest of the car given that this is the only photo available, but judging from what we have, it is clear that the new Swift appears less cutesy and more grown up.
Powertrain wise, expect the new Swift to use a mild hybrid system that can also found in the Ignis and Baleno. Whether we will get the new 1.0-litre turbocharged engine remains to be seen.