Borland (http://bdn.borland.com/article/0,1410,32751,00.html) are offering a free download of its C++ BuilderX 1.5 Mobile Edition, which features timesaving tools, wizards, and GUI form and menu designers. It's available for UIQ and Series 60 after filling in a short survey on the Borland site.
Worth pointing out that the GUI form designer (and other RAD features) works with Series 60 only. That feature hasn't been implemented for UIQ yet (with any luck coming in the next version!). Also, as with version 1.0, for UIQ development you'll need the VC++ toolchain on your system (with ide and bin folders on the windows environment path) for C++BuilderX (CBX for short) to tap into.
In theory everything is available for download now (CBX, UIQ SDK, .net Framework SDK, CDB debugger) but I had a go with this on a clean XP box and it complained about not being able to find dumpbin.exe while building a demo project. It appears the UIQ SDK uses one or more files from the VC++ toolchain which are not present in the .net SDK.
For anyone upgrading from CBX 1.0 I'd recommend uninstalling it before installing CBX 1.5. I tried both ways (out of curiosity on a test pc) and it only seemed to work if CBX 1.0 was uninstalled first. Dont uninstall the VC++.net toolchain that got installed with CBX 1.0 though because the free CBX 1.5 will need to make use of it.