alpha/beta software in Fedora 8?

[Chuck Anderson <cra WPI EDU>]

Fedora 8 shipped with an BIND 9.5.0a6, recently updated to 9.5.0a7.  
The release announcement for BIND says:

BIND 9.5.0a7 is a alpha release for BIND 9.5.0.

	This is a technology preview of new functionality to be be
	released in BIND 9.5.0.  New APIs are not yet frozen.

Is this an appropriate release to be putting in a stable Fedora 
release?  I've encounted a segfault in this version, which I've 
reported here:

https://bugzilla.redhat.com/show_bug.cgi?id=400461

I'm concerned about the policies which allow unstable software in 
stable Fedora releases.  Is it considered acceptable/encouraged to 
have alpha versions of software in the stable release?  Is there any 
policy?

Thanks.