Well you have a couple of options:
Your local LANDesk representative. You should be in contact with this individual, and receiving this information.
Your local ESP.
LANDesk Webex's about upcoming changes.
LANDesk Regional User groups.
The roadmap is confidential and will never appear on the community. This is usually covered by LANDesk with you via your regional representative. Changes to SPs are covered here - there were at least two videos about launchpad and power changes, and blog entries. Also, read the readme files in the SPs and always test it first in your test environment. For a Roadmap contact your LANDesk Regional Rep.
When in doubt about who to contact - find the nearest office here: