Rails 3 is a very substantial effort to upgrade to. There are definitely actively-updated apps that are doing it more gradually (add no_xss, add bundler, conve

Rails 3 is a very substantial effort to upgrade to. There are definitely actively-updated apps that are doing it more gradually (add no_xss, add bundler, convert in bits) but haven't made it to Rails 3 yet. I expect that's more the rule than the exception right now, in fact.