Petabyte-Class E2 SSDs Poised to Disrupt Warm Data Storage
storagereview.com
storagereview.com
Is there any reason to believe that these versions will be stable enough?
Flash cells are capacitors. Like all capacitors they leak slowly over time. For long term storage on an SSD you should probably keep it powered and regularly scrub the filesystem like ZFS does.
Ssd design isn't suited to this.
In fact, I believe future ssds will need to stay powered up 24x7 or lose the stored data. (Maybe allowing brief power downs of say up to 24h)
I suspect spinning rust is still going to be critical to long-term and small/medium scale archive applications for at least another 5 years. It may not be getting significantly denser but it's a well understood, reliable-ish and affordable technology.
I don't expect to have an "all flash" NAS at home (~100TB) for another decade :(.