4/20 announcement is fake and was to create buys while bittrex unloads coins. This is why you aren't going to see a big run up like last pump.
If you don't believe me check out this:
https://chainz.cryptoid.info/cann/#!walletsBittrex unloaded 6 million coins, used to have 28 million! If this coin is going to do something why are they unloading?
Where from would bittrex hsve 28m cann rofl...it's ammount in wallets of users trading on exchange silly.