The underlying platform SCN is moving from Jive to AnswerHub. There will be a number of changes to how SCN operates as a result and in addition to that transition. Primary among those are:
1. Spaces (such as the PowerBuilder Developer Center) are going away. Some will be replaced with Community Topic pages. See the following for more information: http://go.sap.com/community/beta/spaces-topics-tags.html
2. The reputation program is getting a major rework. There was a recent SAP Community Call that detailed the changes, a recording of which can be found here: https://sap.na.pgiconnect.com/p9n1ie9cfic/
What hasn't been announced yet is the timing. However, I thought I would at least spread some information about the changes in advance so people are not caught unawares when they come.