You can wait forever and those non-true 50mW still won't ship. My order on 9/9 changed from packaging to processing contact for updates and hanging there in limbo. So you can leave it there for awhile unless they decide to ship to you before shipping to me!
Either, the unit doesn't pass QC(meaning DC QC) so they can't ship it out to customers and is being held up. That said, I think DX's laser QC consists of turning on the laser and comparing the dot brightness. So they go something like:
"Ooh that dot's much brighter than our 20mW or 30mW so it must be at least 50mW. Slap on that "Quick Check" sticker. I guess we can ship it out and hope they don't complain too much if it fails."
or
"It looks the same as our 30mW or weaker. We can't ship this. Wait this customer's probably a noob and can't be bothered to RMA it, let's ship it out anyway."
There have been many reports of the KaiDomain's non-true 50mW being less bright and poorer quality than the DX true 30mW.(They don't even bother to quick check) I have also read a few reports of the DX non true 50 mW being brighter than their 30mW.
I was also thinking of canceling my dx50 order but after waiting so long, I want to compare it to my dx30 true. Besides, there have been quite a few posts about dim dx30 true recently so maybe their quality is dropping together with their price. Tempted to get a few more true dx30s as gifts with the price drop but I'll wait on it.