Hi,
I am also interested in news on this:
Roadmap from your site is:
PlayMaker 2.0
Graph View grouping.
New Graph View nodes (groups, colors, comments, controls...)
New Variable and Events list items (groups, colors, embedded images...)
Native Pooling.
Native Tweening.
Backward compatible with PlayMaker v1 projects.
Also, most new user are complaining about old tutorials (for us long time users of Playmaker this is not a problem).
I think that, from hutonggames company perspective, releasing new version will be source of new income because your huge user base will upgrade to new version.