Don Southard has a great rundown for MacStories:
The public release of Alfred 1.0 is now available and brings with it a multitude of new features as well as improvements to existing ones. For most software developers reaching version 1.0 is a special milestone. I had the opportunity to speak with Andrew Pepperrell, the developer of Alfred, about his thoughts regarding this release and this is what he had to say:
Alfred 1.0 is a meaningful release; it’s more than just the new features. Version 1.0 marks Alfred’s maturity in my own mind, and users will no longer see him as unfinished. To be honest, 0.9 should have been 1.0… maybe even 0.8
If you haven't tried it out yet, I'd highly recommend it.