As far as I can see, all the exam objectives for SCJP1.4 are somehow included in the exam objectives for SCJP5.0 (maybe in a different order or with a different emphasis).
As a certified 1.4 programmer who's preparing for the 5.0 exam, I would recommend at this point studding very well all the material related to SCJP1.4 first.
Also note that many new things in the 5.0 exam are not necessarily from the Tiger (
Java 5.0) release, but from previous releases. For example: regular expressions, java.io for text and binary streams (including serialization), sorting, searching, using the Comparable and Comparator interfaces, just to name a few. Serialization comes from Java 1.1!
...Ariel
