As far as I know, the Trello board is still up to date. I think the original plan was to make the changes within 6 months of May 2016 but as that got delayed (probably because of the launch of the bank / current accounts), you can now expect the changes within the next 3-6 months. Or a least, that’s what Tristan (who’s mostly responsible for the roadmap), has said.
I’m hoping that this particular issue will be resolved when the new bill splitting functionality is launched, which is due (I hate to say it now)…soon 