As of this release, Titanium SDK 6.x will not be supported one calendar year from 7.0.0.GA's release date. See See Axway Appcelerator Deprecation Policy and and Nominal Lifetimes documents documents for details.
Support for Windows 8.1 and Windows Phone SDKs has been deprecated as of SDK 6.3.0.GA and has be removed in SDK 7.0.0.GA
The Appcelerator Daemon is a server that runs on the developer's computer and hosts services which power the tooling for Axway products such as Titanium SDK. The Appcelerator Daemon aims to solve tooling issues by introducing a robust, flexible, and consistent foundation for implementing product tooling. It does this by providing plugins that define services which are exposed via the built-in web server to any HTTP, WebSocket, Node.js client, or shell script. The Appcelerator Daemon is designed to be highly decoupled. All product-specific logic is run inside a plugin while the Appcelerator Daemon provides core functionality to plugins such as file system watching and spawning subprocesses.