...the blog is at a critical stage in its evolution. Blogs are out of beta. Blogs are the new normal. Everything is a blog. So what's next? Well, the format will indeed evolve into something new. I believe it will be the stream.
From the Steve Rubel lifestream.... And some tips from Problogger, here's one:
Don’t be Precious about your ‘Blog’ and be open to change - there’s no one ‘right’ way to blog. Blogs can have comments or not have comments, have full RSS feeds or partial ones, look like a traditional blog or act and look more like a lifestream or portal. The key is to know what you want to achieve and let that shape what you do with your blog.