Adobe has just announced the release of Adobe Photoshop Lightroom 4 Public Beta.
Today is it's 10th! Anniversary!
You can download it for free, here. it will work until the final release (Somewhere between April and October of this year)
Then you get to upgrade or buy the program.
If you have Lightroom 3, please use that for your regular work flow ---This is a Beta Release!
There are already lots of expositions elsewhere on the web as to what's new in version 4!