pkrass from Nokia Forum writes this news on the Blog:

Nokia recently released the updated Carbide.ui 3.4 Theme Edition compilers. These enable the creation of .SIS files for themes on S60 5th Edition devices, including the Nokia N97, and all feature packs of S60 3rd Edition, including the Nokia E66, Nokia E71, and Nokia E75. In addition, Nokia recently released Carbide.ui Theme Edition 2.0, a new version of the Nokia N97 and S60 5th Edition plug-ins. It offers improvements in both theme performance and previews, and additional colour groups.

all you need for theming is a Carbide.ui Compiler, Carbide.ui 2.0 Plug-ins and Carbide.ui 3.4 Plug-ins

"The updated Carbide.ui 3.4 Theme Edition compilers enable the creation of SIS files for themes for S60 5th Edition, including the Nokia N97 device, and all feature packs of S60 3rd Edition, including the Nokia E66, Nokia E71 and Nokia E75 devices.

This update is designed to resolve issues with the performance of theme on devices."

you can download the packages here:

• - Carbide.ui 3.4 Theme Edition Compilers
•   
• - Carbide.ui 3.4 Theme Edition Plug-ins
•   
• - Carbide.ui Theme Edition 2.0 Plug-ins
•  

i hope this update will bring us more cool looking themes for our Symbian phones :-)

source: Nokia Forum