News on a 1020 successor? None. Rumors on a 1020 successor? Hundreds.
But let's just focus on the news. Discussing rumors usually doesn't end well.
According to a recently-written article (Feb 2016) which I won't link to, they have numerous reliable sources that a Lumia 1050 will be released in 2016. However, no matter how "reliable" those sources are, "Microsoft hasn't confirmed the release [or the makings] of a 1050", to quote the same article.
As you can see, even the "News" is about a rumor. So, bottom line, we're still left in a vacuum.