One of my favorite new features is the improved Forecast view. With the new version, OmniFocus mixes your due tasks in between your events, in order. Then, in Forecast view, you can see exactly how your day will (ideally) go. Click to enlarge the sample below.
So much of staying productive hinges on setting yourself up for success without overdoing it. Laying your calendar on top of your tasks in order has really helped me be more realistic in planning my days.
That is just one feature of the new OmniFocus 3 for iPad and iPhone. The Omni Group is a brilliant group of programmers, designers, and generally nice people. Head over to the OmniFocus website to learn more.