For the former, it would be easier to choose one or two coins that you'll invest, note their coin sale date, and buy whrn the ICO began rather than being on a wild goose chase, aiming whatever coins that's on sale. Keep in mind that not all ICO is legit and will be successful. A lot of scam coin is exhibiting ICO merely to gather money and run away with your money. This is why you better only choose one or two to be focused on. They'll usually have announcement thread few weeks before their crowdsale, which will give you enough time to study their whitepaper and determine if their project is beneficial enough or not.
Also about ICO, if you choose to invest on ether based tokens, there is this app called "eidoo" that's functioning as ether wallet, they also had a "built-in" notification of incoming ICO for coins that's affiliated with them. (Please note that I have no relation with eidoo, and whatbI said is merely a friendly input)
While if you mean to have "newly released" coin as in buying a newly tradable coin, I think it is more tricky. After an ICO, coins usually went under for certain period before announcing exchange, and they most likely won't announce which exchange will enlist them at when until the day has come, given that there are a lot of threads being updated hourly, it is near impossible to keep a track of newly tradable coin's announcement. Unless, like my suggestion on ICO, you choose one or two project to follow. The trickier part is because unlike ICO, they don't have the exact date of listing, thus you have to check their thread often.
thanks the above info..
all the best..