The Asterisk development team has released Asterisk version 1.4.21-rc2.
This release is a release candidate for the upcoming official release of 1.4.21. A few bugs have been fixed since 1.4.21-rc1. Please continue to assist in testing before we release 1.4.21!
The release candidate is available on the download site.
http://downloads.digium.com/pub/telephony/asterisk
Please provide release candidate testing feedback to the asterisk-dev mailing list, or the issue tracker, http://bugs.digium.com/.
Thank you for your continued support of Asterisk!
Russell Bryant 
It would be really cool if there was a changelog-1.4-current so you could just have a link and click it to see whatever the latest changes are.
Thanks for the feedback.
I suppose we could do that. However, the other “current” links we include are to the latest official releases, and not the release candidates.
For this release, here is the ChangeLog:
http://svn.digium.com/view/asterisk/tags/1.4.21-rc2/ChangeLog?view=markup
Sweet, I mean, I could use the tag to work out the changelog url, its basically just that I don’t want it to change 🙂
Right. Well, I could try having a “1.4-latest” symlink in the tags directory. I wonder if that would work …
Here …
http://downloads.digium.com/pub/telephony/asterisk/ChangeLog-1.4-current
Man, you’re a star that’s exactly what I wanted!
Don’t suppose you could do one to go with these:
http://downloads.digium.com/pub/asterisk/asterisk-1.6-current.tar.gz
http://downloads.digium.com/pub/asterisk/asterisk-addons-1.4-current.tar.gz
http://downloads.digium.com/pub/asterisk/asterisk-addons-1.6-current.tar.gz
http://downloads.digium.com/pub/zaptel/zaptel-1.2-current.tar.gz
http://downloads.digium.com/pub/zaptel/zaptel-1.4-current.tar.gz
http://downloads.digium.com/pub/libpri/libpri-1.2-current.tar.gz
http://downloads.digium.com/pub/libpri/libpri-1.4-current.tar.gz
🙂