Currently Being ModeratedOct 7, 2013 7:48 PM (in response to padozsa)
It will not be free, so you cannot download it without paying for it.
OS X Mavericks
You will find all the public information about OS X Mavericks here: Apple Releases Developer Preview of OS X Mavericks with 200+ New Features.
We are all users, too, so we don't know anything more about Mavericks than you.
For more information on the features of Mavericks see: Apple - OS X Mavericks.
Mavericks is expected to be released sometime this Fall.
Currently Being ModeratedOct 7, 2013 7:52 PM (in response to padozsa)
Neither pricing nor the release date has been announced, but if trends hold, Mavericks will be so inexpensive that it won't be a large expense, and if you use your Mac to run a business it will certainly pay for itself in the productivity gains of better battery life and memory usage.
Currently Being ModeratedOct 22, 2013 11:35 AM (in response to padozsa)
Apple just announced 20 mins ago that the new OS Mavericks is "being released today" and it is FREE