For the Metro version: We hope to work on it until this week-end and then submit once again.
For the RT version: At the same time, we're spending quite a bit of time to get a working version for ARM, so we can deploy on
Windows RT too. We don't know exactly how much time, but we hope it's a matter of weeks. The issues are mostly compiler related.
WP version: Windows Phone should not need a lot of extra work for the API, but will require some work for files management. Adaptation of the basic UI should be simple enough.