Looks like Stack for Jailbreak has some new improvements. For those of you unfamiliar with the application, Stack adds a quick-launch menu directly to your iPhone dock, letting you expand your dock space to hold all your favorite apps. With it you can add 16 items (using grid view) or 5 items (in fan view) for easy access in each stack. And stacks are not just limited to the dock. You can add stacks anywhere in the home screen as well.
As this video shows, you can now rename your stacks as well as use drag and drop editing. So you can create a 'Games' stack, an 'Internet' stack, and so forth. Removing items from a stack is just as easy as adding them. Just drag them out from the stack for an Apple-standard "puff of smoke" animation.
Stack, which is developed by iPhone expert Steven Troughton-Smith is donor-ware. Although not ready for public release, he has regularly been seeding early alpha builds to people who have donated to the project. But as you can see, it's making great progress.
Stack is a jailbreak-only product as Apple does not permit this kind of OS-based enhancement in App Store. That's a pity, because the relative difficulty and fear of jailbreaking keeps this kind of groundbreaking software away from the general public. It's an enhancement that Apple really should have built into the iPhone -- and hopefully someday will.