There are new coins that are being developed and while they do present opportunities for ground floor involvement, these are high risk ventures as most do not gain traction. Despite, they are still an aspect of crytocurrencies.
Unless you are a well capitalized venture capitalist, these are opportunities you may want to skip.  There are enough altcurrencies that have already began to move that you can participate in but you'll need to study and  be guided as to the right ones to consider.