As many of the oesf people would know by now (although I could not read the article above..), sharp's termination of zaurus is related to commercial success of new line of a wm smartphone named W-ZERO3, which hasn't long been popular in Japan because of oligopoly by communication careers. (and, one more thing, popularity of more simplistic electronic dictionary lines.)
This transition has been done as favor of a phs com module W-SIM, for which architectures are open, and now small group might be able to produce their linux mobile phones.
The problems I concern are...
Some W-SIM phones do not(and will not) have communication devices that can be used in western countries, eg Wifi, GSM. So selling and hacking these models are not expected in countries other than japan, china, taiwan, thai, and some african countries, in which the phs standard adopted.
Second, above all, zaurus's one and only sense of use and custmizability are no more garanteed.
Actually, I purchased W-ZERO3[es], may be the top seller in the W-SIM line, and have sold it and returned to SL-C760 in 2 months...
I hope anyone to produce linux-based clamshell pdas or W-ZERO3[es]'s linux rom soon...