On the Zend Developer Zone today there's an announcement about the PHP Barcelona conference's Call for Papers now being open!

The PHPBarcelona Conference 2010 will take place from the 22nd to the 23rd of October and is a unique opportunity to share knowledge and expertise with other developers, architects, managers, and prominent community members on the very shore of the Mediterranean. [...] The call for papers will be open until the 20th of June. As a speaker you will have the chance to not only bathe in the pool of talent that is the PHPBarcelona Conference but also to get in line with the biggest names in the industry.

They're looking for anything that pertains to the full life cycle of software development and something that'd be in the 50 minute (regular session) or 1 hr 50 minute (tutorial) session times. To submit your ideas, email them to call4papers(at)phpconference.es with your name, a photo, the talk abstract and a short bio.