The phrase "new extension" refers to adding something new or extra to an existing thing or concept. It could be a physical addition, like building an extra room to a house, or a new feature or function added to a product or service. Full definition
But factors such as debt, payment history, new extensions of credit, and types of credit lines that you hold will affect your credit rating. (debtfirms.com)
Along with that we have a brand new extension in the works which will be announced soon. (layerswp.com)
We're working with partners on adding new extensions and want our Insiders to try them out first! (blogs.windows.com)