Based on my experience, you really can't just set a sort of update notification on every single coin and just buy after a certain update. You're going to get heavily mixed results if you're just going to ape into projects just because they have a certain news/update even though you don't know anything about it.
That's certainly true. Just because a coin has had some positive news around it does not necessarily mean that it will pump as to my experience it all depends on the market conditions at that time.
For sure, keeping track of coins that might be of interest in the future is a hard game to play and as far as I know there isn't a one-stop solution for this.
Not even Telegram groups because the coin you might have an interest in might not be the same for the rest. There is however a nice Telegram group which gives you some of the latest alts updates:
https://t.me/KriptoProfessor