I am releasing GRC version 0.69 today, September 19th 2007.

Download: http://www.joshknows.com/download/grc/
Wiki: http://gnuradio.org/trac/wiki/GNURadioCompanion

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This release supports the current gnuradio trunk (r6477), and the 
soon-to-be 3.1 branch.

GRC and gnuradio have been through many changes these past few months; 
especially, the adoption of hier2, which has temporarily broken GRC a 
few times. With the gnuradio trunk stabilized, and 3.1 comming up, a GRC 
release has been long overdue.

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Features and Fixes in 0.69:

Upgraded usrp blocks:
-support flex rf boards.
-rx bug on side B is fixed.
-dual input sink and dual output source

New mathematical expressions:
-complex math
-filter functions
(see the help menu in grc)

See the release notes for more detail: 
http://gnuradio.org/trac/browser/grc/tags/grc_0.69/notes/release_notes.txt

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GRC 0.69 is a pre-release of GRC for the gnuradio 3.1 branch. GRC 0.70 
will be released along with gnuradio 3.1. The 0.70 release will have 
some additional blocks, examples, and bug fixes (if necessary).

Comments? Suggestions? Typos? Bugs? Feedback is welcome.

Thanks,
-Josh Blum