I don't know how many people get retailer/distributor notices but here is one from Discraft. I guess the flx line is doing well.

"Special Notice to Discraft Retailers and Distributors:
The following Discraft golf products are being discontinued as stock items (only in the line specified). Small quantities of these discs remain available, which can be ordered now while they last.

X Buzzz GT
X Challenger
X Challenger Fly Dye
X Crush
X Predator
X Predator Fly Dye
X Slipstream
X Storm
X Talon
X Talon Fly Dye
X Tracker
X Tracker Fly Dye
X Wasp

Z Breeze
Z Putt'r
Z Putt'r Fly Dye
Z Storm
Z Storm 150 Class
Z Talon
Z Talon 150 Class

Of these, the following disc molds will be completely discontinued as stock items:
Buzzz GT