Functions 3.x go live work items

Below are a few work items we are tracking before the January GA date. You can begin using 3.x in production today.

• PowerShell functions in 3.x are rolling out the week of Dec 9.
• Durable Functions written in JavaScript will not work until the next Durable Functions release.
• Visual Studio will create apps in ~2 by default. They should create in ~3 by default when we GA in January.
• The Azure Portal will create apps in ~2 by default. They should create in ~3 when we GA in January.
• The Azure CLI will create apps in ~2. They should create in ~3 by default and allow a version flag when we GA in January.
• There is no version toggle for apps deployed to Linux in the Azure portal. You will need to manually modify the FUNCTIONS_EXTENSION_VERSION to ~3 to move to 3.x.
• Azure Functions deployed to Azure Functions premium plan in Linux may need to also update the LinuxFxVersion to leverage 3.x functions.