The Premium stand bag looks very similar to the Linksmaster series Member's bag. I have a I believe Titleist made the Premium stand bag available for retail purchase. The Linksmaster could only be purchased through certain pro shops.

I didn't see a staff stand bag...could you be referencing the hybrid stand bag?

Being the Staff Stand Bag is no longer offered in the new catalog I had to go back and try to compare the two bags. Seems they are very similar in offerings based on a retail catalog I found on line. The Premium it 5.4 lbs where the Staff was 6 lbs. The features of the new bag seem pretty awesome and if I were guessing, it probably replaces the staff stand bag. They also are not carrying the mid size Tour Bag in this year's line, which is my personal favorite.

Features & Benefits

Classic design, inspired by the Players 4 Plus
Mixed material construction with premium synthetic and jacquard
Premium carbon fiber legs
Velour lined top cuff for club protection
Full-size apparel pocket for improved storage
Shoulder pads with superior comfort
Convertible strap system
Premium, quilted hip pad

I too have the Mid-Staff (my favorite too) that I use on an remote control cart. I have the Staff Stand Bag from a few years ago that is my travel bag, and I have a light weight 4up that I keep in the trunk for walking (when I can't use the "R2D2" remote cart, or forget to charge the battery. Love them all but Mid-Staff is go to. I think you're right on the Premium replacing the Staff Stand

Interesting comments. I have two of the midsize tour bags. My favorite is the older black/white which is in great shape, but the new black caught me eye and just had to have it. I have an older all black lightweight carry bag which is out of stock that has my name on it with the TT logo for traveling by air. Fits great in my hard shell travel case and in that I can no longer walk courses works and great on carts. See the tour players are not playing black and white bags again and was hoping for a new mid size and then saw they were gone from the catalog. Guess it is the old supply and no demand. I will take good care of mine so they will last.