I always upgrade when the version I currently run is EOL at the earliest.
Especially in this case 15 seems to bring some major changes, so I expect it to still have some flaws left at official release. That ain't no malice insinuation. It's "natural" that anything finally is released from the laboratories into the wild have some flaws, or even bugs, left.
By all my experience with FreeBSD so far the responsible persons in charge rather postpone a release date than ship anything that even remotely smells like crap.
After all this ain't no consumer's gizmo garbage from some greedy joint-stock company staying in schedule for the christmas sale whatever the cost.
I don't like stress. I had more than enough of that unhealthy useless crap in my life. If 15 would be released in April or May next year, it was completely fine to me.



To me at the moment there is no need for an upgrade at all.
Everything runs fine.
Neither I want to stress the developers.
I prefer things run reliably, stable, as usual, and relaxed instead of nervously stay on guard for every new version, and to get it always immediately, and then to deal with flaws, patches, bugs, or maybe even mess up my machines, because I was too hasty, missed reading some important point in the docu...


Plus I don't want to stress the servers even more by all those who must have new releases within the very first minutes. (Is there bedroll camping on the internet's sidewalk?

)
I will wait at least three months.
I always watch the forums and mailing lists carefully to be prepared for any "surprises", and to know how to deal with them in advance if there are any.
