We're excited to be releasing support for testing on Chrome and Firefox beta and dev versions for Mac OS X, Linux, and Windows. The beta and dev versions are available for both automated and manual testing. And to give you access to new platforms as quickly as possible, we'll continue to add support for bleeding edge versions the day they're released.
Simply change the version capability to "beta" or "dev" in your desired capabilities to run against the early release versions for Chrome or Firefox. You can also copy the code needed to configure your tests to run on specific browser versions by using our platform configurator.