As the title says are their any plans. I have tried converting to phpbb3 and then from that to mybb1.4 but the posts were all blank (tried a few times)
It's still an RC by the looks of things so it won't be supported right now, but I'm sure that once the final release is available it will be supported at some point.
It's only RC due to theming issues, they went from php to html.
Still, I very much doubt Ryan will write a merger for something that's still an RC.
We don't support non-final products.