This is directly from Alien Skin...
Exposure 3 is ready. Here are a few highlights, but the juicy stuff is on our Web site. There you’ll find entertaining videos, gorgeous images, and you can try Exposure yourself. For a detailed list of what’s new, checkout the features page.
You'll immediately notice that Exposure 3 feels much more responsive because of the completely rewritten preview system. Exposure 3 in 64-bit CS5 is over twice as fast as Exposure 2 in CS4 on the Mac and about 30% faster on Windows.
Lightroom and Photoshop CS5 64-bit
Exposure 3 works great with 64-bit Photoshop CS5 on both platforms. CS5 gives Exposure access to more memory and a big speed boost. Tight Lightroom integration supports batch processing and does not require Photoshop.
Over 500 Hand Crafted Presets
There are many new carefully researched presets, including early Kodachrome, Technicolor, Autochrome, bleach bypass, Panatomic-X, Tech Pan, and Lo-Fi toy cameras. New effects like vignette, dust, and scratches help the retro presets look more realistic.
If you purchased Exposure 2 in April 2010 or later then you will receive a free upgrade soon through e-mail.