Quentin Harley, of South Africa, has released the plans for what he believes might become the next standard for RepRap.  Named for Thomas Hunt Morgan, a scientist known for his extensive research on the common fruit fly, the RepRap Morgan uses a SCARA (Selective Compliance Assembly Robot Arm or Selective Compliance Articulated Robot Arm) configuration to control the print head.

With a stated goal of keeping it affordable, many of the Morgan's parts can be 3D printed and those that can't are relatively inexpensive (no worse than other DIY printers)

The plans are available on GitHub.  The assembly instructions are a subsection of Quentin's project blog.