The three versions also available on some streaming media platforms, like Spotify.
"Come Together" also sounds smashing, judging from the bits in the presentation videos. The stereo mix is based on Sir George Martin's mix, he supervised the original mixing sessions.
As there's no reason for me to simply give you the words from the press release, here it is from the horse's mouth: Official press release.
As for formats and contents, these have been described by the Superdeluxeeditions blog, so I don't have to ramble on about that, either.
Finally, here's the link to preorder the stuff.
And here's a couple of promotional videos: