From the homepage:
A minor update, but it's important anyways. Beta 3 is now available for downloading, and you though the next one would be released perhaps next year, eh? ^_^;;

From rocknes.txt:
** NOTICE ** This is a beta version, might be unstable.

What's new for version 5.00 BETA 3 (01/03/2007)
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- Timer tweaked a bit, it's better.
- Fixed display messages and flickering.
- Some internal changes and minor fixes.

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Notes: * Read 'oldnews.txt' for complete history of updates.
* Report any problems in a descriptive way at
http://www.geoshock.com/rocknesBB
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http://rocknes.kinox.org/

-Trebor