Howdy Garett,
I've had my hands on that new drain pan recently and it seems to be mostly what we've been waiting for

. It does not come pre-drilled for the final drain line fitting since so many keepers have their own ideas of where they want that drain line to be

. What you'll want to do is decide on what surface/location your are going to locate the drain pan. For example, if the drain pan will be sitting on a table where there is no access to the bottom of the drain pan then you'll want to drill your drain line hole on one of the sides of the drain pan. That hole is where you'll connect a drain tube that will go down to your drain bucket. My recommendation is that the hole you drill into the drain pan of the right diameter so that you can screw-in a 1/4 pipe thread fitting. If you are locating the drain fitting on the side of the drain pan, be sure that you place it low enough so that all of the captured water can drain out of the pan rather than having a big puddle left over. Be careful not to go too low on the side of the pan such that you actually end-up with the brass fitting below the bottom of the drain pan itself

.
You can always drill and mount the brass fitting on the actual bottom of the drain pan itself so long as you place it where it doesn't interfere with whatever you are resting the drain pan on, such as a desk.
I hope all of this isn't too confusing

.
Top view, looking down on the drain pan:
View of a typical brass 1/4 male pipe thread-to-male-barb fitting:
Here is one of my homemade drain pans. Note the brass fitting (tubing attached) located in the bottom corner:
Here's one (~5yrs ago) all set up with bucket too: