This could definitely be possible. Amazon has expressed interest in the past in accepting btc if i'm not mistaken as well.
Them being interested in accepting bitcoin and announcing acceptance of bitcoin is going to prove to be a very positive piece for the traders and they are likely going to open up long positions. I'd say as soon as they announce it we can expect at least $300 increase in btc price.
Though the timing is still unknown, but end of October seems likely.
In case of an official announcement from Amazon I see a bigger increase in price. But this report is not enough reliable.
Yes sooner or later they will accept bitcoin or some other cryptocurrencies.