The roadmap for the next releases (2.3/2.4) has been published in the documents section, and will be added to the main nav right after this post.

Please note that the part describing 2.4 will be updated later on, as this release is expected to be bigger than what is actually written (but how much has yet to be defined, and will depend on the success 2.3 gets from other developers).

An important note too, before people start asking: 2.2 will not be discontinued until we are able to give something better to every 2.2 user. Some maintenance releases will continue to be published until 2.4.0 is ready (2.2.4 is almost ready and will be published in the forthcoming days).