No Longer Made, But On Its Way!

The Propeller Professional Development Board is no longer made by Parallax, but I found one on ebay and it is on its way.

Parallax described the PPDB as follows:

Overview:
The Propeller Professional Development Board (PPDB) is a high-quality, fully-integrated development platform for the Propeller P8X32A multicore microcontroller.  A wide variety of peripheral connectors and typical I/O devices such as LEDs and buttons are built into the board, providing the developer with an ideal platform for rapid Propeller project development.

Key Features:
On-board voltage regulators provide 5 V and 3.3 V supplies for your application circuits   

Contains the most common I/O interfaces for the Propeller chip on one board  Large breadboard area gives plenty of room for additional components and devices

See -  Propeller Professional Development Board Guide and Propeller Professional Development Board Schematic.