BW.com is considering the support for SegWit (~8% hashpower)
https://twitter.com/www_bw_com/status/850147251972329472

Chandler Gao (co-founder or investor of BW) tweets support of Segwit on Litecoin https://twitter.com/ChandlerGuo/status/850141884425027585

Prohashing (currently 1.4% of hash power) says they can get up to 6% redirected to Litecoin and signal SegWit with it.

Clever mining (1.2% of hash) is signalling segwit.

Litecoin will be coming to OpenBazzar soon.
https://twitter.com/SatoshiLite/status/849828707065671680

Litecoin is being added to Coinbase.
https://status.coinbase.com/