Since people here know more about these formats than I do:

I was just wondering if you had an answer as to why IE is the only browser that doesnt' support alpha transparencies on PNG images. It's quite annoying as I was really looking forward to using PNG's on my new site. I think they're great! But I can't use any for transparencies because I and most people I know use IE (as much as some people here might enjoy it, I and everyone I know aren't going to switch OS's or browsers overnight ).

I haven't been able to find the explanation anywhere. As far as I've read on the PNG homepage, IE and NS both began support of the format at the same time, but IE is the last browser not to support this feature. Why? Are there any announcements that future versions will?