Microsoft is promising to promote the creation of "software creation assembly lines" in the forthcoming versions of its Visual Studio developer tools. Software factories currently use tools such as DSLs (domain-specific languages) to achieve this, and Microsoft plans to give developers the ability to create their own DSLs through a common Microsoft SDK. The "Whidbey" and "Orcas" versions of its Visual Studio will contain this new technology. Whidbey is destined to become Visual Studio 2005, and Orcas its replacement, due some time in 2006 or later. Orcas will be part of the "longhorn" wave.