They say: "the truth, of course, is that a pasted-in image of a tweet is a bit of a hack. We have an alternative to propose; it’s coming tomorrow."
The art of copying and pasting tweets into stories is fairly commonplace. Silicon Valley gossip site Valleywag practically does it every day. (See: Overheard: Facebook's CEO Hates Privacy from Thursday) With Twitter becoming the source for more information, an official solution, assuming it is customizable and elegant, like the company's existing widgets, will be welcome.
@robinsloan posts from @twittermedia about getting quotes right.
Of course, copying and pasting one's tweet and saving it as an image (as I did above) puts the power in the publisher's hands, and doesn't rely on a third party site, like Twitter, to host the content. It also keeps the tweet intact should it be deleted later by the source. Looking forward to what gets introduced tomorrow.