Here's a list of the latest goings-on regarding software, firmware and docs. You can check back here every now and then to see what developments you've missed.

June 6, 2014
Added support for interfacing with an Arduino DUE over SPI.

February 19, 2014
Added beta files.

February 28, 2014
Added firmware-0.1.42.hex which has UART support.

March 24, 2014
Added Arduino-Pixy library arduino_pixy-0.1.2.zip which adds RC-servo control over SPI, so Arduino can control the pan/tilt.
Added to Running the Pan/tilt Demo to describe how to run the Arduino pan/tilt demo

March 28, 2014
PixyMon 0.1.47 available. Changes include better Mac support (versions OSX 10.6 and up), simplified firmware upload, and improved parameter dialog.

April 1, 2014
New documentation for Mounting Pixy, Powering Pixy and the Pixy Serial Protocol.

April 10, 2014
Preliminary Linux PixyMon is available. Check it out! Tell us if it works, doesn't work, what you needed to do to make it work. Thanks!

April 16, 2014
New firmware (ver 0.1.44) that fixes the daylight overexposure issue. Download here. Use the instructions here to get new firmware on your Pixy.

April 29, 2014
New PixyMon (ver 0.1.49) that fixes firmware upload issue that some computers were experiencing. New PixyMon source distribution is now available in the Files section, that makes it easy to build on Mac and Windows (in addition to Linux).

June 6, 2014
Arduino Due support added – download here.

July 8, 2014
libpixyusb (beta) is available. This library allows you to talk with Pixy over USB with your own programs — great for Raspberry Pi or Beagle Bone computers! Check it out here.

July 9, 2014
New firmware and PixyMon release (version 1.0.2beta). This version supports color codes and has various other tweaks under the hood. Check out the details here.

January 23, 2015
New firmware and PixyMon release (version 2.0.4). This version offers improved detection accuracy, simplified and effective color signature adjustments, improved button-teach method, improved implementation of color codes, new features added to the serial interfaces, and saving and loading of onboard Pixy parameters. Check out the details here.

February 13, 2015
New firmware and PixyMon release (version 2.0.6). This version fixes several issues with PixyMon. New firmware (version 2.0.8) offers improved performance with libpixyusb and fixes an issue with lost parameters in flash. New Arduino library (version 0.1.7) fixes an issue with SPI where you needed to be receiving blocks to issue servo or LED commands.