Language Chosen Carefully on WWDC Promo
I'm sure I'm not the only one to notice this, but Apple chose its words very carefully when describing what to expect at WWDC 2006:Join the thousands of Mac developers who will be attending WWDC 2006, and be one of the first to preview Mac OS X Leopard. You’ll get the chance to explore the latest Mac tools and technologies, and to learn the advances that are keeping Mac OS X far, far ahead of the competition.
The site uses "preview" as a verb, not a noun or adjective. That is, it doesn't say "a Leopard Preview DVD" or a "Preview Version of Leopard." Instead you can be the "first to preview." See and possibly touch, but don't take home.
Now, if Leopard is scheduled to come out at the end of the year or even the beginning of next, an actual Leopard DVD still seems fairly likely, but the language here leaves enough wiggle room for the DVD or download to show up at some point after the conference.
The updated track descriptions are, unfortunately, still quite vague (at least the ones I read). They just read as high-level descriptions of the APIs that are available in Mac OS X. There are some definitive tasks such as "Call Objective-C methods from a Carbon application," but mostly they're just category listings.
Then again, it's only April, so maybe I'm judging too harshly. Still a third of year to go.

Language Chosen Carefully on WWDC Promo
Posted Apr 18, 2006 — 10 comments below
Posted Apr 18, 2006 — 10 comments below
Dale — Apr 19, 06 1110
The only thing I did notice of interest was "What's New in the Mac OS X Kernel" (OS Foundations track). It isn't very specific but it does tell us that the kernel changes are significant enough to warrant a session. Apple updated Tiger's kernel signficantly for networking (if I recall correctly) which led to speed improvements. Maybe there's more changes afoot which will improve the user experience.
Jeff — Apr 19, 06 1111
Ben — Apr 19, 06 1112
Scott Stevenson — Apr 19, 06 1114
June 2004 and April 2005, respectively.
Jon Hendry — Apr 22, 06 1121
And maybe they're looking at what is going to ship as Vista and figure they can afford to slip a little... ;^)
Jon Hendry — Apr 22, 06 1122
Alas. I would have liked to have it ship by year's end.
Oskar Lissheim-Boethius — Apr 23, 06 1124
Scott Stevenson — Apr 23, 06 1127
A lot of people seem to think xnu is a microkernel. It's not.
Ken — Apr 26, 06 1129
This has been my observation in my optimization work in my own (unreleased) app, and also the recent OS X vs. Windows stdlib performance tests.
This more than anything I hope gets fixed because I think it has the potential to speed up high level frameworks like cocoa that allocate and release lots of auto-released objects.
Daniel Eggert — May 07, 06 1188
Well, it was meant to be a joke, obviously, but it think Apple is very eager to deliver this one well ahead of Win Vista. Just my 2 cents.
/Daniel