Its RV370, X300 low end card is its first 110nm baby and ATI said it is doing just fine with it. We saw that the core was actually tiny compared to the 130 nanometre based RV380, X600 series and that will certainly save some costs. We also learned that the 110 nanometre process is actually not Low K as this is not yet available.Source: The Inquirer
TSMC is building ATI chips and the foundry is ready to overwhelm the market when Intel introduces its platforms later this month.
ATI is already considering the next generation process at 90 nanometres in calendar 2005 which means that it is aggressively pushing its roadmaps ever onwards and upwards.
ATI to switch to 90nm process in 2005

Some more future plans from ATI leaked out at Computex. In 2005 they are planning to switch to the 90nm production process. Currently they are switching to the 110nm one.