Tether CEO Paolo Ardoino announced on Twitter that Tether will release a fully open-source Wallet Development Kit (WDK) this week, including starter wallets for iOS and Android. Previously, Paolo released a demo and overview of the WDK template wallet, which offers comprehensive non-custodial support, multiple seed phrase backup options, and a complete DeFi module covering USDT, USDT0, lending, redemption, and more.