I’ve heard back that they will try to push for this to be implemented in 4.6, even if it’s an experimental feature. This should at least be a good start to getting something that your team can work with to developer Windows 8 touch supported products!
Things can change and something may cause this to be pushed back, but it is on our radar now. Keep an eye out for our release notes with each build and what new features are included. I’ll keep this post bookmarked and update when I see any updates. 
Thank you!