For Cantor users, Scilab, and Python2 developers:

Merging scilab-backend - http://quickgit.kde.org/?p=cantor.git&a=commit&h=4497741eeccfdd118d38a778d4808c1c2979b050

Merging python-backend - http://quickgit.kde.org/?p=cantor.git&a=commit&h=a1b139a7d30964525529bde9cfafada237040058

Available soon, in KDE 4.12.