Although producing admired (even loved), fast, stable and energy-efficient machines, Psion as a consumer PDA company went to the wall as it dithered in the "one box vs. two boxes" debate (would consumers prefer an all-in-one computing and telephony device (i.e., a smartphone), or a PDA with nice screen and keyboard connected to a separate mobile phone?). Their last EPOC-based device available was a sub-notebook, the Series 7 (the corporate version was the "Psion netBook"), released in 2000; they merged with Teklogix soon after and refocused on handheld devices like those used in warehouses.
The PsiXpda is a new handheld/UMPC that appears to keep the old Psion flame alive: small, fast, that unique clamshell. However, it lacks the other main attraction of the original Psion: the light, fast EPOC/Symbian operating system. Instead, it uses Microsoft Windows XP; the developer is aware of Google's Chromium OS, but is taking a wait-and-see approach. He seems to have no comment on the now open-sourced Symbian.