No Question: The XPage-Feature introduced by Notes/Domino 8.5 is quite cool. Web applications look like modern webpages. But how can Lotus Workflow participate from this?
First of all, there is no integration/support out of the box. Quite a shame as more and more applications move towards this new technology.
Is there a workaround? Maybe! You can build your own custom controls. But which API to call? Call the agent used by official” API to do your work? – No good solution, this even does not work reliable. Of course you may alter items directly, but what about compatibility in the future? And what about exposing Tasks and Decisions? – There is no API for this features.
Seems to me, the only real solution is an official upgrade by IBM. Any other implementation may fail when upgrading to a new version or lack of functionality.
So, all we can do is sit and wait for Big Blue moving 
There is already an idea on IdeaJam dealing with XPages – feel free to vote ;o)
2009-12-02 at 00:30
We have spend some time evaluating options. You are right that the solution would be tightly coupled to current WF release, but there is no roadmap for new version from IBM anyway.
If anyone wants to cooperate on this, let me know.
Martin
2009-12-02 at 09:17
Just keep on voting on IdeaJam! I’ve been talking to Peter Janzen recently: They ARE reading and respecting the ideas promoted on IdeaJam.
I’m sorry, but I can not state any details of our discussion, but it made me looking more optimistic in a brighter future ;o)
So please keep on voting!
2009-12-02 at 09:54
Good to hear. I wrote an email to Peter Janzen a while ago, but I received no response. I’m also considering development of custom workflow platform, so I’m glad for any information that would keep me preferring IBM workflow for future projects. If you can send me some hints over email, I would be happy
If not, I’ll have to wait for next steps from IBM.
Martin