The first portion of the update that would be most notable is the viewports in Max and Maya are now using DirectX 11. This represents an incremental update for 3ds Max, but a major change for Maya which had previously been using OpenGL. This allows users to use DX11 shaders directly in the viewports which should help with game development by giving artists a better idea of what their work will look like in a DX11-based game engine.
Autodesk Maya 2014
Besides the switch to DirectX 11 viewports, Maya 2014 has many new features and enhancements. New modeling tools based off of the NEX toolset from Digital Raster, and promise to greatly accelerate modeling workflows in Maya. The new Scene Assembly, File Path Editor and URI (Uniform Resource Identifier) tools are meant to allow quicker and easier handling of large and complex scenes.
Autodesk 3ds Max 2014
Max 2014 not only benefits from the updated DX 11 viewports, but also features an enhanced and more efficient Particle Flow toolset, the new Populate feature to allow artists to populate 3d scenes with moving background crowds, Perspective Match tools to match 3d rendered images to still frames, and Vector Map to allow the use of vector drawings as resolution-independent texture maps.
Autodesk Softimage 2014
Softimage 2014 features a new Camera Sequencer tool to allow cutting between cameras in a single rendered scene without altering the original scene data, improvements to ICE and CrowdFX to allow control of passes and scene partitioning, and an improved High-Quality Viewport for better visual feedback. Also featured is improved animation data interchange through the use of the FBX 2014 format.
Autodesk MotionBuilder 2014
Autodesk's tool for manipulation motion capture and other character motion data is updated with new motion capture workflow options, the ability to use custom viewport renderers, and an API for file referencing. MotionBuilder 2014 also adds Linux compatibility.
Autodesk Mudbox 2014
Mudbox 2014 adds single-click automatic methods for export in addition to the more detailed manual export settings, simplifying export for artsts. New retopology tools have been added to help artists restructure their meshes for optimal density, detail, and the ability to animate the meshes. The new revision also adds stencil and multitouch support, and support for new touch-enabled input devices.
Autodesk Sketchbook Designer 2014
Sketchbook Designer 2014 features a hybrid vector/paint workflow that allows design sketching using painting, image compositing and mixed media workflows for quick sketching of designs on the computer using techniques originating in traditional media like drafting markers and pens.
The Autodesk 2014 suites are expected to be available in April. Pricing varies on the Suite selected.