Pacific Performance engineering has a new pressure box. A collegue of mine says this one doesn't have any of the notchiness of the other aggressive pressure boxes.
There are also some new downloader promises being made out there. PPE is supposed to have one, but I have not seen it. PDQ (the volumizer people) are working on one as well.
Also in the last 3 months the Edge Juice for the 600 has released, so that one will be getting some exposure as well. I expect the Juice for the 555 will be very soon to follow but have no confirmation of such.
I haven't updated the on line matrix on account of time spent on the next article. Joe and I tested nine different boxes and you will see the results in TDR 47.