The usual disreputable source is making stuff up again. In the past they've claimed that sources told them that Amazon would release a Kindle with a Liquavista screen (an outright fiction), or that there would be a new Kindle Voyage in late 2015 (another fiction) or that Sony is working on an e-ink laptop (a wild misinterpretation).
Now they're claiming that "David Limp the senior vice president of Amazon devices and services teased in a recent interview that Alexa might come to Kindle e-Readers. This would be a boon for people who want to have their e-books read aloud via text to speech."
The problem is that's not what he said. Here's the actual quote, which more closely resembles a "no comment" statement given in response to a question than a tease.
Seeing as Alexa has been integrated into other companies’ products, including Ford’s cars and LG’s smart fridges, surely it would make sense to upgrade the Kindle in the same way the Fire tablets and Fire TV Sticks have been recently updated? “I wouldn’t say never,” Limp says, carefully. “If we were to do it, we would have to have her in a way that was not distracting to customers, in a non-intrusive way.”
I agree with the general sentiment on MobileRead Forums; that is not Amazon teasing Alexa on a Kindle; that is someone ducking a question without saying yes or no.
Ask Linp about releasing a large screen Kindle, or dual-screen device, and he would give you the same response. Sure, Amazon is looking at all ideas; it's called spitballing. But that doesn't mean they will follow through on any of the ideas they come up with after late-night drinking sessions.
And given the current Kindle hardware, it is very unlikely that they would add Alexa to the Kindle. Remember, the Kindle doesn't have native audio ability; you have to buy an aftermarket part (either a Bluetooth speaker or USB dongle) in order to activate the accessibility features.
So if you want Alexa on the Kindle you'll need to get the right dongle or a BT speaker with a microphone, and then remember to activate the feature, and -
That just sounds like too much of bother.
Sure, Amazon could always release a Kindle with a speaker and a microphone, and then add Alexa to that device, but there is zero evidence to suggest that Amazon is even considering this move.
You could make that argument but you would be inventing an excuse to justify a wild misinterpretation. Doing so turns you into a "pundit" along the lines of that one guy that invented the idea that Apple was going to make a smart TV, and kept insisting it was right round the corner (seriously, it all came down to this one guy's obsession - that, and tech blogs writing clickbait articles about the idea).
Don't be that guy.