The release date for the English version of 'The People of Sparks' by
Jeanne DuPrau is Jan 2004. If you enjoy this novel, it is available for buy as a paperback from Barnes & Noble or Indigo, as an ebook on the Amazon Kindle store, or as an audiobook on Audible.
The tale of Lina and Doon, who have left the subterranean city and entered the fascinating new world above, is continued in the much anticipated follow-up to the critically acclaimed The City of Ember. It's up to Lina and Doon to figure out who's behind the destruction and why when anonymous acts of vandalism drive them into violence.
Here's an alternative cover for it.