Tests have been run with jvm1.4, jvm1.5 and jvm1.6 on up to 28 different OS platforms. A summary-report will be published here: http://dbtg.thresher.com/derby/test/10.4.1.2_RC/PublicTestReport.html
I have also updated http://wiki.apache.org/db-derby/TenFourPlatformTesting with these 10.4.1.2 test results.
Thanks Henri PS: Results for 10.4.1.3 will be published tomorrow