I am only one batch deep so take this with a grain of salt....
I am generally very skeptical of online recipes and other peoples advice, so when I decided to gamble the $25 on a batch of apfelwein I had low expectations but the hopes for something great. I tasted at transfer out of primary (5 weeks).... tasts like a very young yeasty wine. OK, wait longer
....
Tried it again after 1 month aging.... still young and not good but passably palatable. I would not serve it to friends at this stage (at least not my friends to avoid ridicule).
put in the cellar in a keg......
I continued to draw pints every month and continued to be disappointed, said to hell with it, and forgot about it.....
Fast forward to 7 months of aging, cracked into it with a buddy brewer of mine just for the hell of it, BAMO! Awesome dry cider!
After 8 months, everyone was asking how I made it and if there was any more.
The moral of this story is, Apfelwein takes a long time to age to get good, and that I will not have any AW available for another year because I wasn't sold on it until just recently (the 8 month mark).
To more directly answer your question, you can drink it now for all I care. However, it will taste more like what Evan! calls Prisonhoochfelwein that what its potential is.