It get's better - from the second half of the announcement:
Learn how partners can author articles on Support.NA.sage.com
Although the content in the archived KB has not been maintained for over a year, we understand that there may be relevant content that is still utilized. Consequently, we have given all partners the ability to author articles in the new KB through May 5, 2015, for the following types of content only:
Any content that is specific to how to migrate to current versions
Any content that still applies to current support versions
If you find articles in the old KB that you utilize, make sure to author it in the new KB.