I haven't kept up with the technical advancements that Litecoin has made, but at first glance this seems like a change that could really help Litecoin stand out. I'm not sure how possible it would be to "merge" the Litecoin and Monero blockchains, so I think this kind of change would be more along the lines of Litecoin adopting a lot of the technology from Monero, so the title of this article is misleading but interesting nonetheless.
Nothing has been official or confirmed, but it's very interesting that Charlie Lee seems to support this idea quite a bit.
https://bitcoinist.com/possible-litecoin-monero-merger-steps-closer-reality/