Logos, a cross-platform Bible study program for Windows, Mac, and iOS, has been updated to version 4. To celebrate, they are offering some great deals on their base packages and upgrades at Logos.com. Students should checkout their academic pricing as well. There's a good overview of new features available on their website, including a list of 100 new features in Logos 4.
Look for a more detailed review after I've had some time to live with the official release. In the meantime, there are a slew of great resources available to show you around on the official website.