We've done a preliminary generation of function cheat sheets for upcoming PostGIS 2.1. We'll regenerate again before PostGIS 2.1 gets released.
We've also updated the PostGIS 2.0 cheatsheets with updated doc links and errata. The html versions of these are generated from the PostGIS documentation xml files using the:
build command. Then we just do some massaging to it and print it to PDF.
Pay careful attention to the superscripts on the functions:
Here is list of 2.1 sheets.
PostGIS 2.1 cheat sheets
We are pretty excited about the upcoming PostGIS 2.1. This is the first time we said screw it we aren't going to wait for release and going to take the risk and start running in production. We do so still using extension upgrade using the feature we described in How to Use PostGIS Extensions to upgrade to non-released PostGIS versions. The improvements coming in PostGIS 2.1 are just too tempting to resist. So many goodies: new functions, robustness improvements, performance improvements, and usability improvements, particularly in the raster area. As Duncan put elegantly In 10-fold Speed up in PostGIS 2.1: "So I know what I have been missing out on!". You've just got to experience it for yourself.