Developer Winocm has been busy on a special project of his, and today announced on his website that he recently achieved "one of the core milestones" of the mission: successfully porting the iOS core to a Nokia N900 smartphone, among other devices. He has a couple images to prove it, and goes on to detail the other hardware that can boot the system, giving developers some porting opportunities.
As you might have guessed from the image, the port doesn't include any of the user interface, and says the developer, he doesn't have any plans right now to support for the UI, saying tongue-in-cheek that it is the Core that is most important. As mentioned, it runs on more than the Nokia, which is imaged above, among the other offerings:
ARM RealView Emulation Baseboard (ARMPBA8_ALT)
ARM RealView Platform Baseboard for Cortex-A8 (ARMPBA8)
Texas Instruments OMAP3530 (BeagleBoard/BeagleBoard xM) (OMAP3530)
Texas Instruments OMAP3430 (Nokia N900) (OMAP3430_RX51)
Texas Instruments AM335x (BeagleBone/BeagleBone Black) (OMAP335X)
By the core components of iOS, Winocm is referring to XNU Kernel, the foundation upon which Apple's current operating systems are built. He doesn't detail what his next plans are in the project (or if he has any, though by the sounds of it there's more up his sleeves for a later day). The last mention of the project on his website before this one was back in late September, when he gave a status update. If you're a developer and interested in his work, you can check it out over on his GitHub.