The Supported Platforms list of the README.txt file for GnuCash 2.6.0 appear not to have been updated from the 2.0.x README.txt. The information for Mac OS X at least is out of date.

How to reproduce:

* Download GnuCash 2.6.0 installer for Mac OS X to a Mac OS machine.
* Double-click the .dmg file. A volume "Gnucash-Intel-2.6.0-1" appears.
* Find the README.txt file in the root of this volume. Open it with a text editor.
* Scroll down to the section entitled "Supported Platforms"


Observed behaviour:

The section begins with the phrase:
   GnuCash 2.0.x is known to work with the following operating systems...
And continues with
   MacOS X		      -- PPC


Expected behaviour:

These lines should refer to 2.6 instead of 2.0, as in:
   GnuCash 2.6.x is known to work with the following operating systems...
And continues with updated system information throughout, details of which I don't know. At least the Mac OS X line should read:
   MacOS X		      -- x86

Build date and platform:
* Used installer at http://downloads.sourceforge.net/sourceforge/gnucash/Gnucash-Intel-2.6.0-1.dmg as of 2013-01-05.

Additional builds and platforms:
 * Not tested on any other installer.

Additional information:
 * 100% reproducible.
 * Does not require running GnuCash.app to reproduce.