This delay pushes out the planned implementation for Unified Addresses support in @NighthawkApps further than anticipated. I am happy to see the release plan mature towards a well aligned release of NU5 + Halo Arc, which enables official Zcash SDK users and partners to support NU5 with verified code along with the protocol upgrade taking effect.
As brought up in the monthly update, contributors to Nighthawk Wallet are working with researchers to develop a Proof of Concept with a novel approach to sync transaction data between light clients and Zcash block server. This work will focus on reducing possible information leakage via lightwalletd and improving sync times for a better end user experience for Nighthawk users. We might be able to target the demo of this improvement along with the NU5 launch.