> for Pivot 1.5 what do you think to set the requirements to Java 6 > Update 10 (or 11, see under) as minimum ?
Pivot 1.3 and later requires a minimum of Java 6. We recommend Java 6 Update 14 or later, but I don't see any reason to artificially enforce a newer JDK release. FWIW, the current Mac version is J6u15.