@ViaBTC announced this morning on Twitter to @SatoshiLite and the #LitecoinFam at large that they intend to support #MWEB and have plans in place to upgrade and begin signaling soon! You can read the official Tweet below.
ViaBTC is the dominant Scrypt mining pool with approximately ~28% of the total Litecoin hashrate as of the time of this writing. ViaBTC is the last major pool to indicate they are going to support the #MWEB upgrade. You can visit their website at viabtc.com.
Once ViaBTC begins signaling, the 75% signal threshold will easily be satisfied. Don't forget you can follow the signaling progress in real-time by visiting litecoinsignals.quest