Autodesk have announced the new features in the 3ds Max 2019.1. The update includes massive performance improvements to Open Shading Language (OSL), up to nearly 100x faster than 2019. Alembic support has also been improved in this release, including the ability to preview contents of an alembic file before you import it. A summary of new features in this release:
Alembic file import and export
Improvements to Alembic files include being able to preview the contents of an Alembic file prior to import, Alembic Helper icons are resizable and can be toggled, and 3ds Max Object Properties and Custom Attributes can be imported and exported.
Improvements include the new Channel Field Object that lets you manipulate specific properties within your simulation, and the boundary controls and Volume helper, which are used to limit areas of effect. You can also now disable specific emitters, colliders, foam masks, kill planes, and motion fields on a per solve basis.
OSL (Open Shading Language)
Open Shading Language performance improvements include improved rendering performance for complex shaders, especially with Scanline renderer; improved viewport representation with native support for over 80 of the included OSL shaders; most user-created procedural OSL shaders can now be viewed in the viewport; and the OSL Editor has been improved, including font customization.
Shared Views improvements include support for all bitmap types, the ability to render and upload most procedural textures (including OSL shaders), the ability to resize textures on upload, support for Shell material, and arbitrary UV channels (limited to 1).
Switching between projects is now more manageable with the new Projects toolbar, that lets you easily see your project folder and switch between folders. Also, the Projects menu now has a checkbox allowing you to toggle the ability to automatically switch between projects.
General improvements include archiving and scene file compression now supports large data sets (greater than 2GB), Vault users can check large files in and out as well as auto-login, FBX can now export animation without needing to include geometry, and attaching large meshes can be up to 7 times faster.
The full release notes of this release are available here.