JLM,
The website should hopefully be updated within a week. The Super 3i and Super 5 Monitor were in production before the "new" 3 series came out. They were classic Omega and killer good sounding with the HempCone driver. Recently Louis decided to try the RS5 driver in the Super 3i and Super 5 cabinets he still had around the shop.
The results were stunning - the next level(s) over the HempCone, not to mention they have really pleasing aesthetic dimensions, so he has re-introduced them to go along with the "new" 3 series. The Super 3E will be dropped in favour of the Super 5 Monitor, but the rest of the "new" Super 3 series are staying as is.
The "new" Super 3XRS is identical to the original Fostex based Super 3XRS and HempCone based Super 5XRS, but with the RS5 driver and different port tuning.
I hope this explanation clarifies things.