In most cases the answer to this would be no. Earlier generations, especially when printing black and white prints, really needed the assistance of a good RIP software like ImagePrint as an example. The significant improvements to Epson's driver technology has virtually eliminated the need for a RIP in terms of print quality.
In some cases a RIP still makes sense but more often than not it is in terms of work flow, nesting of images across the width of the media and auto mirroring for gallery wraps as a few examples.
My first suggestion is buy the printer first and put it through the paces. You can always purchase RIP software if needed.
Regards,
Gary