Thank you for bringing this up.
We've had a nice discussion a while ago, in the SitefinityDevs group on Google+
. I encourage you to check it out!
We have to support AMP sooner than later. The project is shaping up nicely, but there's also a caveat - if your web site is mobile friendly and does not implement AMP, Google will penalize it by reducing its Page Rank score. I am not sure when this will become effective, but this the direction Google is taking.
To be honest and transparent, we can't start with AMP implementation sooner than October, but it's on our radar for both reasons - mobile pages and SEO. By the way, most of the markup can be done with Feather templates even now, but there are some tricky parts with the content that we serve.
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