Read the announcement here. Personally, I like the new fee structure for auction-style listings. I already start most of mine at 99¢, and the .25% Final Value Fee increase for items that sell for $25 or less is a good trade-off, because I'll only have to pay it if the item sells. I'm sure I'll feel differently when I sell items that end over the $25 mark, but what are you going to do? No other site offers you the exposure eBay does.
That won't stop the usual chorus of bitching and whining that accompanies every change to eBay policy ever, though. People on OAI web sites are already claiming they'll take their ball and go home. Rather than waste time repeating myself, I'll just refer you to what I said back in August of 2008.