it seems it is finally there. I managed to install the newest avarice with Atmel-ICE support, easy:
svn checkout svn://svn.code.sf.net/p/avarice/code/trunk avarice-code ./Bootstrap ./configure make sudo make install
I configure Atmel-ICE in Eclipse, two flavours - debugwire and isp. Also, debug is configured for gdp.
The avarice is run like this:
avarice --edbg --debugwire --ignore-intr :4242
The moment where ICE fails is when I try to read processor config in Properties->AVR->Target Hardware
There is no answer from processor and I cannot set debugWire fuse.