Image Spriting Rails 3.1

Is there any planning taking place yet for image spriting in Rails 3.1 (from David's Railsconf talk)? I imagine all efforts are currently set on launching 3.0, but is there someone thinking about this yet?

I know there are some implementations of this on Github, that use RMagick, but I think a solution similar to Cappuccino's is worth considering:

Base64 encoded images increase file sizes a bit, most of which can be mitigated through compression, but it eliminates any ImageMagick dependencies and is backward compatible all the way to IE6.