In a particularly up-front newspaper puff piece, the once-mighty UK handheld giant PSION announces/ promises/ threatens to "[...] start field testing of its latest device: the product of a complete overhaul of the company and another test case for a new way of doing business spawned by the internet.
http://static.guim.co.uk/sys-images/Admin/BkFill/Default_image_group/2010/4/14/1271269678039/A-Psion-Series-5-electron-001.jpg
The newest handheld computer from Psion [will be] based on individual modules which resellers and buyers can configure and even add to, to meet their specific needs. [...]"
http://www.guardian.co.uk/business/2010/apr/14/psion-new-approach-to-internet-business

Here is PSION's current lineup, fellow devices to the new one with which the Internets will be conquered and/or defeated: http://www.psion.com/products.htm