Now that rails 2.3.2 was released (the current version is rails 2.3.2.1), the rails team is following the road to rails 3.0, which means two things:
- There won’t be a 2.4 version
- You can expect a lot of new changes in the version 3.0
There would be a lot of changes in the rails internals, wich means that the plugins would probably need to be rewritten for rails 3.0.
The most exciting thing we will see in rails 3.0, is that merb is gonna be merged into rails, you can read the details here, here, here, here and here.
Rails 3.0 will also allow you to merge a complete ruby application inside another ruby application, with this feature, it will be probably possible to merge a complete forum, a complete gallery application, or whatever into your application in a easy way.