No recent news. See this thread for a similar discussion. Here @AmberV of L&L Support mentions that current Mac Scriv features for finding duplicates will someday make their way to Windows. No target date was given for this–providing target dates for features is not L&L policy. You might want to have a look at the Mac Scriv manual to see whether these features are what you’re after. This post in another thread discusses the Mac features a bit, but the manual will give you details.
Finally, see this post that offers a Regex that finds duplicates. I’ve never tried it, so not sure how well it works.
Best,
Jim