Yeah, the DSP can be a bit pricey. I have the one without all the bells and whistles (inclinometer and such) and it works great for what I want. A beacon.
I haven't found anyone who has any experience with it except for the BCA guys. So I have no idea. I also wouldn't be surprised if the Tracker 2 does not come out this year.
If you are looking for an inexpensive 3 antenna beacon, check out the Ortovox D3. I found it to be highly accurate and easy to use. It's basically the same as the Tracker 2 in what they promise. I found the range to be around 40 meters if I remember correctly. Pretty good for a digital beacon. Pinpointing was a breeze with it. I also like the the fact that to put the Beacon on you have to turn it on. Something both the Pieps and Tracker lack. Not sure of the Tracker 2 but I suspect it's the same. Too many times I have gone out with people that have forgotten to turn on their beacon. I've also left my Pieps on for a week. I was impressed though the batteries were only drained to 70% after 6 days of being on. If you find the Tracker 2 to be on infinite back order, you might consider swapping for that one.