Info here from Kona site with all specs below
From what I have read the new Kona Exposifs are very different to the classics from the 90's. The headangle is something like 68.7-69.2 degrees for a 100mm fork, longer forks are not an option due to the slack ha. They use "Kona butted chromoly" not a patch on what they use to be. The new price was around £600 which seemed steep compared with other offerings.
If you are after a modern "retro" feel bike check out the Cotic Soul (based on Kona design) or the new Genesis Latitude 853 frame.
I was myself tempted by a new Kona as my '97 Kilaeua is just so good, Kona hardtails tend to get good reviews but the high price and basic tubing put me off. Still some are selling for bargain prices just now. I did think about an explosif from 2004 as they had True Temper Ox Platinum tubes, disc mounts etc and weighed around 4.5lbs - one on ebay right now if you fancy that.
Hope this helps