[Inkscape-user] Are the performance improvements of 0.49 already in trunk?

We are using Inkscape to edit SVGs generated by the Maperitive OpenStreetMap renderer. Those files are very complex and Inscape is practially unuseable in the latest stable version.

We found on http://wiki.inkscape.org/wiki/index.php/Release_notes/0.49 that there are performance improvements upcoming. So we installed the package from the PPA 1:0.48+devel+10922+30~natty1. Build 10922 is the latest build in the trunk branch as I see.

But using this version, there were no performance improvements notable.

Are those announce performance improvements already in trunk or do be have to use some other branch?

Best Regards, Alexander