The floodgates have opened, it seems. Omnigroup hasn't even downloaded the SDK yet, but they posted in their blog that they are very eager to get started on their first iPhone app, and that app will be an iPhone version of OmniFocus.
OmniFocus is a personal task management application and won a Best of Show award at Macworld.
Task management shouldnt be your full time job. Weve built OmniFocus to take a load off your mind by managing your tasks the way that you want, freeing you to focus your attention on the things that matter to you most. Finish that novel. Spend more time with your friends and family. Grow your business. Let us worry about keeping your goals and tasks, both personal and professional, in one ordered, easy to access system that you can depend on.