Don't know a website that will show info in such a fancy way, but from Reddcoin announcement post:
Difficulty Retarget: Every block using Kimoto's gravity well.
Block halving rate: 500,000 blocks
Reward
100,000 RDD per block
Special block reward
Block 0 - 9,999 = reward 300,000 coins
Block 10,000 - 19,999 = reward 200,000 coins
Block 20,000 - 29,999 = reward 150,000 coins
It will take almost a year before it halves. that's if i calculated right.