There are three measures that determines the Vasil upgrade.

• Cardano developer IOHK has stated three pointers that will determine the success of the Vasil Upgrade 
• Currently, the launch date is unknown as the developer is conducting tests. 

The highly anticipated Vasil Upgrade is on the lips of many who have been expecting the hard fork, and Cardano developer Input Output wants to ensure safety and security. In a Twitter thread released on the 12th of March, the developer said the IOG and Cardano Foundation teams have been working together with the “dev and SPO community” on the coming upgrade. IOHK noted three indicators that will determine the launch date. Already, the company has released the Cardano node 1.35.3, the likely candidate for the Vasil upgrade. The developer stated that the new node version should trigger the official Vasil upgrade on mainnet if there are no emerging issues. 

The IOG & @CardanoStiftung teams – plus the whole dev and SPO community – continue to work hard preparing for the #Vasil upgrade, bringing multiple enhancements to #Cardano.

Here’s a quick recap of where we’re at and what you can expect…👇

Thread🧵
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— Input Output (@InputOutputHK) August 12, 2022

As the new pre-production environment is set to offer a ‘clean’ and more agile environment to test against 1.35.3, IOHK is calling on SPOs, exchanges, and developers building on the blockchain to start the final integration and testing processes. Moving forward, SPOs working with 1.35.0, 1.35.1, or 1.35.2 on the blockchain must switch to the new node 1.35.3. 

Three measures that determine Vasil Upgrade’s success 

The first of the three indicators that will determine the Vasil upgrade is the mainnet blocks. For the Cardano’s Vasil hard fork to happen, the last node candidate, 1.35.3, must create 75 percent of mainnet blocks. The next measure to a successful Vasil hard fork on the Cardano blockchain is onboarding about 25 percent of exchanges with a huge share of 80 percent liquidity. Finally, the top decentralized applications on the Cardano blockchain, including Miniswap, must upgrade to the new node version. Other leading Cardano-based dApps are WingRiders, SundaeSwap, MuesliSwap, and Lending Pond. 

The Vasil upgrade could not launch in early July as earlier scheduled. After that, IOG’s technical manager, Kevin Hammond, revealed the possibility of weeks of delay. According to the technical expert, the wait was necessary for further testing and to ensure a smooth process during the hard fork. Cardano Hoskinson also conducted a live stream where he addressed the delay issue. According to the founder, when you fix a problem, you also need to test the fix to ensure everything is perfect. 

So you get to a situation where you feature complete. But then you have to test, and when you test, you may discover something, and then you have to repair that, and then you have to go back through the entire testing pipeline. So this is what causes release delays.

IOHK wrote in the Twitter thread:

The Vasil upgrade is the most ambitious program of work we’ve undertaken. None of this would have been possible without the community’s support – it’s been a real team effort. Our prime concern is ensuring we manage this upgrade in a way that is safe and secure.