It seems that many new gTLD registries would like a second round of new gTLD applications. ICANN has not said when (or if) it will happen. It seems that there will be subsequent application rounds, but it is anybody’s guess when that will occur.
One of the biggest trends in domain names right now is cryptocurrency related domain names. I am not involved in that space, but there has been quite a bit of investment made there. Bloomberg covered the crypto domain trend, and anyone who has been on NamePros and monitors auctions and sales reports has noticed that cryptocurrency domain names have been selling regularly.
If companies could apply for new gTLD extensions now, I think cryptocurrency domain names would be very popular. Some of the extensions I can imagine would have applicants:


According to a report in the 
