The ArchivePress plugin is now fully compatible with WordPress 3 (thanks Emanuele!). To date. our test installations have been using WP2.9.x, but the aim of AP is to work with the current version of WordPress, so that site managers have access to as many current plugins as possible that are in ongoing development.
One interesting recent plugin discovery, addressing current Semantic Web themes is the PoolParty SKOS plugin. This would seem to have potential to semantically enhance an ArchivePress blog archive. In combination with, say, Triplify, it could create an extremely data-rich blog archive. We’re not going to be able to do that during this project, but hope to try it out at some point. I’d be very interested to hear about and help with any other experiments with this.
You can download the latest package ArchivePress package for WP3 (tagged RC2) from Google Code.