Whether it was an April Fool joke or not the ASIC manufacturers are probably running there new Cryptonight ASICs at full blast to help mitigate the cost of manufacture before passing them onto the customers who paid for them (bit of a scam going on there) and these customers will get there ASICs after some of the Cryptonight coins have changed there algorithm and so the ASICs they bought will be almost useless.
Sumokoin and Monero have announced they are soon to change the algo, when is ETN changing ?