I wonder what people asking about a sealed 610 are really missing with the current sealed 410 and 810? Sure you trade of size and volume between those two cabs, but do you really see to gain with the 610? a little more volume, and a little less size? IMHO the limited appeal of that combo with the same tonal profile would be a failure on Ampegs part. Right now if you look at the 410he, 410HLF, 610HLF, and 810e, all those cabs hit different marks. The sealed cabs share a similar tone, but have different size. The two 410's are different tonally. The two HLF cabs are different sizes, but also different sounds.
All in all they havnt double up on to many points, which is a good thing.