I sure hope not - at least not on their "off the rack" boxes. Perhaps yes, if it is through the custom golf ball program.

Now, I have some friends that like using the "alignment" lines on their golf balls for putting. For them, I say "live and let live" or "all the more power to you"!

As for me, I simply do not like using an alignment mark because I find in my experience, that I can become too focused on the line and not the pace. Further, say from 10-20 foot range or more, if the alignment mark is set on the green even a degree or two off of the actual line, then the putt misses.

I tend to be more of a feel putter myself, I need to feel the greens, the slopes, the fall line, and then worry about pace.

I'm with you on that. Would love to see it.

In order to add value to watching too much TV, I will mark and add an extended alignment line to a dozen or so balls while away the commercials. So my marks are dry on course. Years ago I s.o. some Callie something in amber with a an alignment stripe in green. The length was underwhelming and didn't line up with the side marker. One more reason I was disappointed in the purchase.
So, I'm not hoping for it.

IMO the current AIM marker does the trick. Maybe they'll offer it in the MyProV section.

i would love to see titleist put a line on the golf balls... i dont want to go online or to a golf store and pay 10 buck to get a ball maker clamp so i can just draw a straight line.. so then sometimes im in such a rush i take a sharpie and put a line on it and then i go to putt but the line is very weird or not straight at all