From discord:

Hello @everyone! SHIELD v3 is live! Links for the new wallet are below! This version is a major update that comes with a boatload of improvements (some that we have covered previously), as well as our masternode testnet, which begins shortly. A few more things that this release brings:
> Hierarchical deterministic (HD) wallet support
> Full SegWit support > Lightning Network ready
> Wallet translations for 50+ languages!
> Security and stability updates
> and x16s, our 6th mining algorithm!

Please find the binaries for v3 here: https://github.com/ShieldCoin/SHIELD/releases/tag/stable
v3-beta binaries: https://github.com/ShieldCoin/SHIELD/releases/tag/v3.0-beta
Source code is here: https://github.com/ShieldCoin/SHIELD
Upgrade guide: https://github.com/ShieldCoin/SHIELD/wiki/SHIELD-v3-Upgrade-Instructions

We would like to thank everyone for their continued support and patience through this fork!

This is a quick reminder to all pools (especially YiiMP-based pools) to please read the upgrade guide https://github.com/ShieldCoin/SHIELD/wiki/SHIELD-v3-Upgrade-Instructions, specifically steps 5-7 in the "Pools" section. Thank you!

Can you co ordinate with Coin exchange.io for wallet. it is in maintenance for last few days.

We've send them a mail about it (and a reminder) so it should be fixed soon.