Developer Craig Hockenberry, on testing software on iPhone OS devices:
Apple currently lets each iPhone developer, whether a company or an individual account, assign 100 devices for testing purposes. A large chunk of those available devices get used by employees with multiple devices. We also have a valuable group of external testers that we use for Ad Hoc beta testing. Many of these individuals buy the latest and greatest hardware, so each time there is a new product introduced, we use up more devices from our list.
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As developers, we want to maintain a pool of testers, not devices that they test on. Devices are ephemeral: they change as new hardware is introduced and replaced. The thing that remains constant are the people who test our products.
A tweet from Mike Piontek crystalized this thought: the limitation for Ad Hoc provisioning should be based around individuals, not the devices that they own. It makes more sense to regulate Apple IDs rather than UDIDs. I want John Gruber to be able to run my apps on whatever devices he currently owns. I want to put my own name on the provisioning list and enable the five iPhone OS devices sitting on my desk. All that Apple cares about is that are only 98 other people besides Gruber and me.
I think Hockenberry is on to something. Hopefully Apple will change the way this works sooner rather than later.