"We're proud to launch Version 5.0.0 of our popular "Watch Only" software, Sentinel, and boy is it a big one."
"We have come a long way since the previous version of Sentinel, but we still have a long way to go. We have got many more features planned to bring greater functionality in making Sentinel the companion app to Samourai Wallet."
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Introducing Collections. "You can now add and manage public keys in different Collections, allowing you to view the transaction history and balance of a whole Collection while still having the ability to do the same for individual public keys."
Balances and Transactions. "In every Collection there is an All tab, where you see the total balance of that Collection, and can watch every transaction for all the Collection's public keys. You may also tap onto individual tabs to view a specific public key's balance and transaction history."
Receive & Send. "As Sentinel is a watch-only wallet, you can of course generate receive addresses from a specific extended public key within one of your Collections. Simply tap on the receive button."
Compose unsigned transactions. "We've also added the ability to generate a partially-signed-bitcoin-transaction (PSBT) to be signed with the latest Samourai Wallet release. Navigate to the desired public key then tap the send button to launch a familiar transaction details screen. This means you can use Sentinel as an online companion to your entirely offline Samourai Wallet."
UTXO Management. "As Sentinel now gives the ability to create PSBTs, we have added the ability to mark your unspent outputs as Spendable or Do Not Spend."
New Settings. 1) Ability to hide the bitcoin to fiat conversion throughout the app to display only BTC amounts; 2) A great enhancement to exporting / importing Sentinel encrypted backups. In particular when importing it is possible to customize exactly what elements of your encrypted backup you want to recover.
New Icon. "Probably most controversially - as these things usually are - we changed the app icon to better reflect the relationship between Sentinel and hot/cold wallets."