Hi there,
Launchpad now supports blueprint work items natively and we've already migrated the work items from the whiteboards of most Linaro Blueprints. Most of us wouldn't even notice those changes because we still have a text field to enter work items and it uses the exact same format we used before. In the future we might improve the user experience but for now we decided to keep the same UI and format. There's a blog post with more information, if you're curious:
In practice this just means you'll enter the work items in the 'Work items' field instead of the whiteboard (the meta info [acceptance/headline] still go there, though), but the work items of some of our Blueprints could not be migrated, so I've spammed^W sent an email to the owner/assignee of each of them. It would be nice if those of you who receive that email migrated your BPs manually but even if you don't status.l.o is setup to pull work items from both the new field and the whiteboard, so you'll still see your work items there.
And if you're curious why we're doing all this, it's so that we can implement the monthly engineering views in Launchpad:
https://dev.launchpad.net/Projects/WorkItems
Cheers,