That's funny, why are they ( Acurite ) showing a 5-in-1?...............
This is apparently a staging web site for the MyAcuRite web help files. They are apparently showing all known devices for their next MyAcuRite release, which will support the Atlas (not the Atlas Elite) and the older sensors. Not seeing the Elite in the staged help screens or the spy photos from Chaney HQ a few months ago tells me not to hold my breath for the Elite any time soon. Note that the batch of Amazon "leaks" posted today were missing the Elite.
If you read a little bit deeper, you will see that they are claiming that the new Atlas will talk with the old smartHUB, in addition to the new 7-device "AcuRite Access" hub. The second and third paragraphs conflict about whether PC Connect would be supported for the Atlas, and there's a note in another part of the site that PC Connect will not work with the new consoles. Do they even have USB?
Having some experience decoding the Acu-Rite over-the-air protocol, seeing that the new Atlas sensors are working on the same 433Mhz frequency as the current 5-in-1 hardware does not guarantee Atlas compatibility with the older consoles. At least from this documentation, it looks like your best case would be re-using your smartHUB if replacing a 5-in-1. I highly doubt that the current consoles will understand the new Atlas packet types, especially the wonky wind direction scheme if the Atlas does more than 16-point readings and actually reads true degree directions.....