http://www.luminous-landscape.com/reviews/software/whats_new_in_lightroom_4_overview.shtml
10 January, 2012 - What's New in Lightroom 4?
Adobe has just anounced the availability of Lightroom 4 Public Beta. You can find out more, watch a free 22 minute streaming video with Michael Reichmann, and link to the free program download.
A Kitchen Table Video Overview

January 10, 2012
Adobe has just announced the release of Lightroom 4. Actually its full name (love the way those corporate types think) is Adobe Photoshop Lightroom 4 Public Beta. Let's just call in LR4, shall we?
But, what's a public beta, you ask? It's very clever actually. What it means is that anyone can download LR4 for the next while (maybe a couple of months). No cost, no need to have owned a previous version of Lightroom. Then, when the commercial version of LR4 ships your public beta version
will cease to function. You'll have two choices at that point. You can
purchase or upgrade and then have a full perpetual working copy, or
simply walk away saying no thanks.
The system does provide Adobe with a vast number of people to find small last minute bugs (it is a very complex program, with support for hundreds of different cameras, and numerous platforms),
but more importantly it seeds the program into the marketplace for tens
of thousands of new users, curious as to what it is and how it works.
Believe me – there are very few people, who once they have spent any
time discovering the depth of Lightroom, turn their backs on it.
Press the Expand Arrow Icon Above for Full Screen HD
The above 22 minute free streaming video looks at the primary new features in Lightroom 4 –
Softproofing, Book, Map, Moire Brush, Video Ingest, New Tone Controls and more...
Training
As regular readers know Jeff Schewe and I have been
involved in Lightroom since before it was first introduced. We have
together produced numerous training videos, and in Jeff's case books as
well. We will be shooting a brand new multi-hour Lightroom 4 training
video in January, which should become available beginning in late
February.
In the meantime, for the many thousands of current Lightroom owners
who already know Lightroom 3.6 or earlier, and who simply want to
discover quickly what the new features in LR4 are, I have produced a
free streaming 22 minute long video introduction.
Please note. This is what is best called a casual "kitchen table" video, and not one of the professional productions that our video producer Chris Sanderson does so well. I also had some audio issues (which you'll no doubt hear if you listen closely).
There is also no attempt to be all-inclusive. This video is simply
intended to point you toward the major new features found in LR4, rather
than how to use them. For that you'll need to wait for our full LR4
training video release coming in late February or early March. Till
then, explore the new features in Lightroom.
Our colleague Ian Lyons has just published his own overview of Lightroom 4.
It can be found here.
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