This from DAZ management:

My apologies for not posting in this thread earlier. We here at DAZ 3D have been very busy working on some big projects. One of which is the DAZ Studio 4 Advanced and Pro launch. It has taken all of our developers, even the team working on Bryce to wrap up the last details. No excuses are good enough however. 

I have been in discussion with our CTO, and he is committed to getting an upgrade for Bryce to run under the Lion operating system release. This should be good news for everyone. The only thing I don't know is how long it will take to update or develop. One of the developers said it should not be a huge effort, but until he dives into it it's not completely known. 

I hope this helps, and I'm very sorry for the delay in responding to each of you. Perhaps in sorting this out they will also work on many of the outstanding bugs, or, perhaps some of the bugs will sort themselves out...  Time will tell.

 

And, of couse, Mac owners worried about running Bryce in Lion can always use a PC emulator.