B&W announced that it has updated the 800 series with diamond tweeters in all models as well as improvements in the other drivers and crossovers, resulting in greater dynamic range, lower distortion, and higher power handling. Prices range from $2750 for the HTM4D center-channel to $24,000/pair for the 800D, and all models should be available to consumers by April. You can read more on the 800 series and diamond tweeters, here.