I was there last year and saw the new archway whilst it was being constructed next to the reactor. It really is a sight to behold.
As has been mentioned in comments above, the area really isn't that dangerous any longer (in many places) - there's around 4000 people who live and work full-time in the exclusion zone. As long as you're careful with your dosimeter then you're perfectly OK.
That said, it /will/ still be around 500,000 years before the exclusion zone is truly safe for humans once more since there are still a great number of long-lived isotopes around in the soil (mostly Cs137 - half life of 30 years and Pu238 - half life of around 88 years).
It's definitely a place to go visit - there's some fantastic remants of the cold-war lurking around in there. I spent two days there - staying overnight at the (small) hotel in Chernobyl, and could quite happily take the camera back there for another excursion.