Microsoft made a statement that Windows Live 3 services would begin rolling out by years end and that time is quickly approaching. Microsoft was not specific on a date publicly but a letter sent to beta testers said that December 1st would be the day. If your one of the lucky few who has been beta testing, your applications may cease to work once the final product goes live.
What can we all expect on or around December 1st? Not too much really as that's the day that Microsoft will start to roll the big ball of Windows Live 3 services. No one other than Microsoft knows that products will hit first but the transition will begin shortly after December 1st.
When the products do go live you will be able to download them at download.live.com.