I thought the same exact thing when I saw the trailer at first. A short tease, but an incredibly interesting one. They definitely have my attention now.
The trailer leaked but it's already down now.
The book is great. Haven't read the whole quartet but the first one is this crazy wonderful mix of post-apocalyptic Mad Max-ish world, swashbuckling adventure, steampunk, and a sort of mordant, British sense of humor. It's a tale that's pretty bleak and entertaining at the same time.
Though just a tease, I thought the trailer really captured that tone/vibe. It has great energy, reminds me of early PJ films like The Frighteners and Dead Alive but with a bigger budget and much more experienced Weta behind it. The CG is rough in spots but, I mean, the movie is a year away. The designs are cool (see a lot of anime influence there) and the footage had a kinetic power to it.
Also, I think they did a great job casting this thing by keeping it on the cheap ($100 mil ain't a ton for a movie that will be this FX-driven) but populated with inspired, international casting choices. Robert Sheehan and Hera Hilmar (who is seen in the trailer as the red-scarved Hester Shaw) are going to be great as the two leads, and I freakin' can't wait to see Hugo Weaving as Thaddeus Valentine (GREAT part for him), Jihae as Anna Fang, Patrick Malahide as Magnus Crome, Colin Salmon as Chudleigh Pomeroy, etc...
Can't wait for the trailer to come back up!