0.5 RC has been recently released, is a complete rewrite of the library that uses OOP principles and allows database caching and other neat features.
Version 0.23 of the library has been released, now renamed to "Ale" and dubbed "Eldstrom's Effort". Highlights include full support for all EvE-Online API functions and EvE-Central API functions; caching that can change the cachedUntil hint that CCP sends in response to "retry after" API errors (happens on WalletJournal, for example); and lots of utility functions to allow you to query API results, set the API server (useful for Sisi), set the user agent (useful for EvE-Central), etc. Full details are, as always, in the CHANGELOG; as well as in the updated documentation, now in ODT, RTF and PDF format.
Version 0.22 of the library has been released. Highlights include support for assetList and industryJobs thanks to Dustin Tinklin; caching that obeys the cachedUntil hint that CCP sends; and a move to the LGPL so you may use this library in non-GPLd code. Full details are, as always, in the CHANGELOG.
eve-apiphp 0.21 has been released. It stabilizes kw4h's 0.20 release. Please read the release notes and CHANGELOG for full details.