CompleteRSS 1.0 was released yesterday, it’s been upped to a full-release, no longer alpha. Nothing major has changed as far as functionality or purpose is concerned, but it’s a highly recommended upgrade because it addresses a couple of high-profile (really annoying) bugs that can occur if you have a post with the word “feed” in the permalink.
Moreover, there have been several fixes to enhance compatibility with non-standard permalink structures, older versions of PHP, and feeds via proxies. It’s a fully-stable release, and now it’s more important than ever, since WordPress 2.1 has gone public.
WordPress 2.1 never displays content past the <!–more–> marker in an RSS/Atom feed, unlike WordPress 2.0.x & co. If you’re a dedicated blogger and you love your readers, do them a favor and serve full-content RSS feeds: they’ll appreciate it, and you’ll get more feed subscribers :)