We have updated our Statement of Direction in respect of 3.1 and 4.0.
One of the biggest changes is the fact that "Dynamic Reporting Regions" feature has moved from 4.0 up to 3.1. Carl Backstrom's blog Oracle Application Express (APEX) 4.0 - Preview Video shows a video of what sort of functionality to look forward to.
Other notable enhancements now planned for 3.1 include improvements to the PDF report layout and enhanced print attributes allowing for more control of PDF document structures.
Previously our plan was to not include any UI changes in 3.1, therefore, we would not need to go through and translate the source. Obviously introducing this new region type and changes to our PDF printing screens includes significant UI changes.
The down side of this is that it will take us longer to release 3.1 but the upside I think will make the wait VERY worthwhile.
For those of you attending Oracle Openworld we are planning on having one of our Demo machines running our "Pre-Production" version of 3.1. We can't guarantee that everything will function 100% (it is pre-poduction after all) but we should be able to give you a nice sneak peak of what to expect. So please stop by the Demo Grounds and say G'day!