I have several side projects that run on 2.3. I don't have the time to upgrade them or the resources to purchase commercial support for Rails 2.3. Your comment

I have several side projects that run on 2.3. I don't have the time to upgrade them or the resources to purchase commercial support for Rails 2.3. Your comment makes me wonder if you are aware of some undisclosed bugs that will be disclosed in the next few months, or if it's more of just a "4.0 is dropping, 2.3 support is going bye-bye" kind of thing. If the former, I'd appreciate some clarification on that point. I have no problem backporting patches myself (and in fact extensively patch libraries when needed!), but I'm wondering if there's an active-yet-undisclosed threat, or if it's just "people aren't going to do my work for me". Can you elaborate?