I haven't heard much either. From what I read earlier in the year, the '2016' spark will just be a 2015 spark with no noticeable changes. I assume by "off the radar" the article means that Chevy is not really talking about it or pushing sales because there is nothing to discuss. Not that they talked much about the 2015 model very much either, but still.
Chevy's site still lists a 2016:
http://media.chevrolet.com/media/us/en/ ... /2016.html
If that has changed and they are not even going to offer a '2016', then they'll probably just sell off any remaining 2015 inventory if they have it.