I just released AVRDUDE version 5.9. I'm a little sorry it
didn't make it in time for the final WinAVR release.
Here's the respective part from the NEWS file:
* New devices supported:
- AVR32A0512 (JTAGMKII only)
- ATmega32U4
- ATtiny4
- ATtiny5
- ATtiny9
- ATtiny10
* New programmers supported:
- BusPirate
- Arduino
- JTAGICEmkII and AVR Dragon in PDI mode (ATxmega devices)
- STK600 and AVRISP mkII in TPI mode (ATtiny4/5/9/10)
* Bugfixes
- see ChangeLog and ChangeLog-2009 for details