Stumbled across the news on Slickdeals, figured I would share:
www.theverge.com
Apparently MoviesAnywhere purchases can transfer to the Apple TV app based on a comment I read.
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The Apple TV app is coming to Roku devices today
Roku owners will be able to stream Apple’s original shows on November 1st.
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How to use the Apple TV channel on your Roku® streaming device | Official Roku Support
Watch Apple TV on your compatible Roku streaming player or Roku TV. Find out which devices support the Apple TV app and how you can sign into the channel.
support.roku.com
Apparently MoviesAnywhere purchases can transfer to the Apple TV app based on a comment I read.