KDE and Necuno Solutions today announced a new open source GNU/Linux smartphone that is supposed to be running a Plasma Mobile based interface. Based on the FreeScale/NXP i.MX6 SoC, which is quite dated, this thing certainly reminds me (in terms of the hardware) of what Purism initially intended to deliver. All in all, while I am interested, I will just patiently wait if this project will ever deliver anything: The software isn't there, the hardware does not seem to be totally defined yet. Smells like vapourware to me.
(Actually, I find the PinePhone more interesting, although the same concerns plus additional ones due to the SoC apply there, too.)