I received the following email from NetSuite. In it they mention "...Older (now outdated) integration clients..." - What specifically does that mean?

NetSuite to Disable the RC4 cipher for Integrations

Security is always important at NetSuite. To keep your data safe, we will disable the RC4 cipher for integrations establishing connection to NetSuite. We will disable the RC4 cipher for NetSuite Sandbox on Monday, November 23rd, 2015 at 3am PST. Next month, on Tuesday, December 29, 2015, we will disable the RC4 cipher for NetSuite Production.

What this means to you
If your company developed integrations on older (now outdated) integration clients, these integrations might be using the RC4 cipher. Depending on the development environment and language used (examples of languages include Java, Ruby, PHP, .NET, and Python) you might need to upgrade libraries, upgrade client versions, and perhaps even edit the code for some integrations. Discuss this with your development teams and identify the integrations that might be affected. You must create and execute a plan for updating your integration clients before December 28, 2015 to ensure they support ciphers other than the RC4 cipher.