How to be one of the first few to get the information of any product launch announcement?
How does the release or launch of any upcoming product or service get into the news?
If you know the specific industry you would like to monitor for product launches, I would suggest using google alerts.
Just configure the relevant search term, and you will receive any news updates on that directly to your email.
Also you can try to create a saved search on twitter, and follow that for any interesting data.