As to the lineage of Hildon, the article is mostly correct. I have already said in several posts on this forum that Hildon was based on the Series 90 UI used in the 7700. Why people think the connection between 7700 and 770 is a new revelation, I don't know... maybe because S90 was short-lived.

One important fact is not in the article. In October 2002, Nokia inked a license agreement with RIM to put a version of the blackberry software (for non-touch screen devices) on the Communicators. If there was a PSION related project that was nixed, this is probably the reason why. The timing fits. Unfortunately, the license was not utilised by Nokia until 2006, due indirectly to the NTP wireless email patent lawsuit against RIM that first made all the headlines in 2003.

But Hildon has little in common with the E90 or even S80 - the UI was HEAVILY updated and modified (perhaps by former Psion people) to get the Series 90 UI for touch screen devices. As to the E90 not being a good Communictor - it was not intended to be a true Communicator. Series 80 Communicators have been lagging and in jeopardy for a long time, and once S60 3rd edition started doing rather well and could be adapted to the wider screen, they were doomed. Communicator loyalists should have revolted when it was announced that the next generation would use S60. It was obvious then. Of course, there are things in S80 that are not in S60!