Details of the upcoming DevDay for iPhone taking place in London, England have been set. The meeting will happen on April 26th at Dexter House, and offer presentations from Raven Zachary and Daniel Steinberg. The conference is meant for software developers and business professionals aiming to learn not only how to build iPhone apps, but also how to market them. Anyone wanting to attend can find addition information and registration details online. A pass costs $545, and includes conference materials plus access to presentations, workshops, and an evening networking e