I do not believe in a rumor. and also about the next bitcoin is litecoin. why?
because I see LTC has a slow development, and also has no plan, so when bitcoin down, LTC prices can not survive, even down as well.
and when compared to the NEO, I prefer NEO or ZCash rather than LTC.
Yes you're right because it's not yet popular just like bitcoin and and can't be used as a means of payment like bitcoin. Bitcoin has been created to be our official means of payment online just not like litecoin I don't even know it's purpose. That's why I don't believe with rumors like this because it's just their opinion.