From Qt Labs: (also see official announcement)
Qt Software have announced that they are porting Qt to the Symbian S60 platform, which in their estimation, opens up some 80 million new devices to Qt applications. Pre-release packages are available here and contain the Core, GUI, Network and Test libraries, and support S60 v3.1 or later, including the new version 5.0. There are open-source and commercial downloads; the former contains libraries in binary, because the free GCCE compiler cannot build Qt. See the announcement for further details and the mailing list. Qt Software are exhibiting at the Symbian Smartphone Show at Earls Court, London, this Tuesday and Wednesday (21st-22nd Oct 2008). The first production release is expected in the 2nd quarter of 2009.