Just in case you are thirsting for the details of what bits of Apple's Leopard are great and which are just CPU-sucking eye candy, keep watching the Technology pages.
Update: here's the review, by Fraser Speirs of Connected Flow. He says, in brief: Time Machine is going to save some peoples' bacon; and also that
as a Mac programmer, though, I can tell you that there are a ton of things built in to Leopard for programmers to play with; Core Animation is just the start. You won't notice these improvements today, but in the long run, you'll start to see great things happening on your Leopard-running Mac.
The reason we haven't just given you some skimpy "someone showed me a machine that might have been running it review" now is because we got a British developer who has been using it since its first beta to review it.
However, Apple insists that developers can't talk about it until their Non-Disclosure Agreement expires, at 6pm tonight. Which ought to be when we'll have it. (Maybe earlier. We're working on it.)
Earlier questions still pertain (will you get it straight away? Will you wait for the .1 release? Will you ignore it altogether), plus a new one: if you're installing, will you back up your data and do a clean install, or just upgrade your old version? And why?