iWeb to become part of mobileme?
I suspect Apple will upgrade iWeb, yet possibly do so as a cloud-based app to enhance the value of mobileme. With Apple's tremendous investment in its new datacenter and Jobs' prior statements about improving mobileme in 2011, and their ongoing and increasing battle with Google and now Facebook, it makes sense they would put more functionality and value in mobileme and iWeb would be a great place to do so.
I suspect the next cloud-based version of iWeb (or "son of iWeb") will contain *many* more social networking, blogging capabilities to create community, stickiness and value around the Apple iOS ecosystem. And, hopefully, it will contain more SEO friendly capabilities.
If this is the direction they are headed, then it would make perfect sense to provide an upgrade migration path to slurp up existing iWeb apps into mobileme.
Just my 2 cents...
Roger