From the Features page:
A beautifully designed platform dedicated to one thing: Publishing.
Ghost is an Open Source application which allows you to write and publish your own blog, giving you the tools to make it easy and even fun to do. It’s simple, elegant, and designed so that you can spend less time making your blog work and more time blogging.
This is exactly what I have been referring to when I said WordPress has somehow become bloated. I just wish I can spend less time making my blog work and more time blogging.
I hope the Ghost project pans out — and they offer a way to import a WordPress blog. 😛