Are you going to update the list to change this line: "Google Earth - Supposedly optimized for dual-core now. Works great, but no honeycomb optimizations as of yet." -- Google Earth is optimized for Honeycomb now.
Feedly is a google reader app that had an update a few days ago to support for tablets. It's my newsreader of choice personally. It's not honeycomb specific, but they have a 10" and a 7" layout
I have been working on a text editor with syntax highlighting support for Honeycomb for the past few weeks. This week I released the first version on the market.