Windows Live Messenger final: Links…
You should probably be able to download Windows Live Messenger from this web page tomorrow.
Also check out the Windows Live Spaces feature list:
According to http://www.liveside.net, http://get.live-int.com is an "internal" website, not intended for public use. Liveside also states that http://get.live.com (the actual "intended for public use" site) will be up and running when Windows Live Messenger is relelased.