A few years ago, Roland released the VR3 Mixer. This year, they announced the new version, the VR-3EX. Boasting HDMI inputs, some great new effects, and much improved audio mixing and routing, it maintains the ability to stream or record your video as well as giving you a standard HDMI output. With it's built-in touch screen preview window, it's a pretty cool little mixer, especially for the roughly $2,300 price point (even if it is SD-only).
Learn more at Roland's VR-3EX page.