Sorry - there is but I got timed out completing a long post about it and lost the lot!
It can be found at https://www.mindjet.com/mindmanager2016-windows-preview/
To do a much shorter version of my previous post, the new version due out in October features:
- Multi-monitor support for different maps, though it is unclear whether you can have say a map and Gantt view of the same map in different tabs.
- Network, flowchart and concept mapping similar to the Network Builder add-in developed by Nick Duffill. You can add attachments, icons, tags, notes etc to these diagrams, search them and also integrate standard mind map topics including tasks.
- Additional topic shapes associated with the above feature. which can be dragged and dropped into diagrams. It is unclear whether these additional shapes or the drag and drop facility can be used in constructing standard maps.
- Line labelling/annotation. Again this is highlighted in relation to the new networking/flowchart feature and it is unclear whether this facility is available to use with topic lines in standard maps.
These are the only features mentioned in the preview and there is no word on parity between PC and Mac versions.