Looks like you get a sword from the train conductor according to the 4th screen shot.
On the screen shot that has the new villain uses the same sky background when facing Bellum. The Trailer seems to improve the "grapple" mechanics as you can grab the hooktounge from anywhere now.
Edit:
More screenshots revealed! From ONM:
http://www.officialnintendomagazine.co.uk/article.php?id=13053* The new enemy seems to have a cunning behaviour like Vatti (Minish Cap) if you look at one the screenshots that has him wearing 2 hats to cover his pointy ears.
* Zelda is playable too according to one of screenshots.
* There will be other Phantoms other than your ally known for months now.
* Remember the old trailers that the Phantom just goes through the flames, on the latest trailer it can now block the flames for Link to go through but it is scared of rats. Ally Phantom seems to be immume to spikes too.
Edit 2:
www.spirittracks.co.uk (the UK version of the official site should work for .com too).
It reveals the story abit and some of the new characters. The villian is likely Chancellor Cole (get the hint Cole and Coal)_ Most of the gameplay requires teamwork lets hope it's not as bad as the last 2 temples on Wind Waker.