Don’t look now, but it could become a reality. A thread here describes the rationale for a snapshot of Arch at periodic intervals, allowing users to bounce between stable points, rather than use Arch in the rolling fashion it has now. A wiki page is up and running now too.
What would it do? It would make it possible to rely on Arch the same way you would rely on Ubuntu, Debian or other periodic releases — install a release edition, and upgrade to the next after six months or so.
If you’re not familiar with Arch, the system now relies on only one release — the current editions of all the software. Every few days — or every day, or every hour if you like — you synchronize against the freshest package list, and your system is updated to the current versions. Old programs are replaced and gone.
Personally it’s not something I would use. I like the rolling release over the periodic style just because it gives me quicker updates and bug fixes. It does occasionally backfire, since a quirky package that slips through testing can sometimes get installed. But that’s exceedingly rare, and in general, I prefer a rolling style.
But I’d agree that it’s great the Arch community is taking the initiative to improve upon it. I would certainly give it a chance, if it comes to fruition.