Oh wow, that's a huge development. For those who don't know Mimblewimble (assuming it works!) allows running a full node on something as small as a microcontroller and utterly eliminates transaction traceability.
Mimblewimble itself doesn't eliminate transaction traceability, since the transaction graph is almost entirely visible in the mempool. But Mimblewimble can be augmented with something like [1] which does mostly eliminate transaction traceability if widely deployed.
It’s probably going to require a little more grunt, it’s also a LTC full node and must process that 70GB chain, but mw itself is very lightweight. What it enables is fungibility to the LTC token, where moving between transparent and opaque chains will Smush the coin history, balance and transaction graph. I do agree it’s a big deal, and if it works we can look at deploying it to.. other satoshi client coins. One day, mw on Bitcoin. It’s important because LTC is a deep production environment worth billions of dollars. People were afraid of segwit — people were making up lies about safety and the dudes that implemented it are true math rockstars. When it worked — of course — on a real value chain like LTC, people were more comfortable using sats on it. I hope mw gains acceptance. Truly ground breaking stuff.
[1] https://forum.grin.mw/t/mimblewimble-coinswap-proposal