Can anybody say why devcoin is rising? I mean was there any major development or announcement that I have missed?
With Dodgecoin it is quite clear why it is going up (the current hype).
I think, it's because of multipools. People realize that it's not safe to keep money in scrypt-coins now.
ASICs was one headache and multipools is the second. So people invest again in old SHA-256 coins like BitGem, BitBar, DevCoin...
It's not profitable to mine them, so multipools will not be targeted to this coins.
And there are now much more GPU-farms then in december. So, I think, in march we will see one drop after another of many scrypt-coins. Some people who make calculations, invest in other coins. Many scrypt coins that don't want to die now apply KGW, but I think, that it won't help because it all depends on profitability. When most of the coins will have profitability around 200% comparing to Litecoin, massive drop will stop.