The Idol Pro 4 is touted to be a Windows 10 flagship device, where it will sport high end hardware specifications alongside support for Continuum. So far, we do know that with Continuum support, this would also mean the presence of a Qualcomm Snapdragon 820 processor, where it will be accompanied by a high resolution display (with rumors of a 2K display rather than a Full HD screen), alongside Windows 10 Mobile Redstone 1.
Apart from that, your visual needs would be fulfilled by a 22MP shooter at the back and a 10MP camera for selfie lovers, but do bear in mind that all that has been mentioned so far should still be taken with a grain of salt since there is nothing official from Alcatel just yet. It ought to arrive via T-Mobile Stateside, although it has been speculated that the Idol Pro 4, too, will be sold as an unlocked device at Microsoft Stores.