Testing of particular operating systems will be against the latest non-beta minor version.
Browser testing will be against the latest non-beta minor version. The version supported will be the version current quality assured.
Internet Explorer Compatibility Mode will not be specifically tested and development will force Internet Explorer to render in the latest browser version of the tested browser.
Pre-release browsers may be developed for at the request of the client but development is only valid for the agreed version of pre-release browser. Although an indicator of support for the released browser version, support is not a guarantee. Further development and quality assurance testing will be required.