According to this US PS Blog post, Life with PlayStation will release in August, not July as previously hoped. Obviously. And July has now ended.
Due to a few procedural matters, the new service will make its way to PlayStation fans in August,” said SCEA R&D man Noam Rimon.
“Rest assured, Life with PlayStation will be a service that introduces a new way to interact with your PS3. By bringing information from around the world into your living room, Life with PlayStation will offer a variety of interactive content and channels on a visually stunning worldwide map interface.”
More through the link.