I have a two-book deal for the first books of the series title: 'The Joshua Files'.
Book 1 is 'Invisible City'. Book 2 - first draft written - no title yet.
'Invisible City' is due out in Feb 2008.
UPDATE ADDED JULY 2007
The deal was recently announced by Scholastic Children's Books and reported by Publishing News. You can read Redhammer's (who represent my writing) announcement here.
Meanwhile I am now working on another project. Quite Secret! I'm not giving anything away about it except that it is set in Cuba and has the working title 'Jaguar's Realm'.
UPDATE ADDED OCT 2007
"The Joshua Files - Invisible City" is now listed at online retailers like Amazon.
It will be available from Feb 4th 2008.