A web search for AVR32 uC3 finds these press releases
This shows 512KF, 64KR, 100p/144p
USB OTG 12 Mbps
two master/slave SPIs,
one master/slave TWI
four USARTs with hardware flow-control.
One USART has special extensions to support modem, IrDA and smart-card ISO7816 serial protocols.
"DSP Instructions - The UC3 ’s multiply-accumulate unit executes, in a single cycle, a plethora of multiply and multiply-and-accumulate instructions on standard and fractional numbers, with and without saturation and rounding. Multiply or MAC results can be 32-, 48- or 64-bit wide; 48- and 64-bit results are placed in two registers. DSP instructions also include many add and subtract instructions as well as data formatting instructions such as data shift with saturation and rounding."
"The two first devices of the UC3 Series A are sampling now and will be available in volume production in 4Q-2007. The AT32UC3A0512, with EBI, comes in a QFP144 and is priced at $9.24 in quantities of 10,000 The AT32UC3A1512, without EBI, comes in a QFP100 package and is priced at $8.67 in quantities of 10,000."