According to Foresight News, Espresso Systems, a blockchain infrastructure firm, has announced the launch of its fifth testnet, Cappuccino, which is now open to the public. The team has expanded the HotShot termination layer to 100 nodes on the Cappuccino testnet. In addition, the testnet has also added support for Arbitrum fraud proofs. This development marks a significant step forward in the company's ongoing efforts to enhance its blockchain infrastructure.