Here's some images of the Parallax P2-ES Accessory Set.
Sharing what I know so far...
These will be sold as a set of 8 PCBs, with part number 64006-ES.
64006-ES(a) - Control (4 Buttons, 4 LEDs)
64006-ES(b) - Serial Host (Twin type-A stacked socket)
64006-ES(c) - 8x7 LED Matrix
64006-ES(d) - DVO (Digital Video Out)
64006-ES(e) - Mini-Prototype board
64006-ES(f) - Serial Device (Two MicroUSB sockets)
64006-ES(g) - Goertzel experimenter with 3 Scope Probe posts (X, Y, GND)
64006-ES(h) - AV (Headphone, Microphone, Composite Video, Audio-to-RCA 4-band, VGA)
The PCB's are sized such that you can connect all eight boards to the eight P2-EVAL header positions at once.
These are planned to run through manufacturing next week, so an official announcement could appear with pricing & ordering details soon!
There will be a larger protoboard (64005-ES) sold separately, which I'll post in a moment to a new thread.