Gabriel Aul, the person who is in charge of the Windows Insider program, did make mention that the Nokia Lumia Icon from Verizon is “still under consideration” for the update, as he responded to someone concerning the device. Of course, that is more or less answering without answering, as there is no clear timeline on whether the Nokia Lumia Icon would indeed make the jump to Windows 10 Mobile, if ever.
I would suppose that it does give some hope to those who are still holding on to the two-year old handset at this point in time, although if you happen to be using a Windows Mobile device with 512MB of RAM, abandon all hope of an update.