They've confirmed that Gwazi is being transformed into North America's tallest and the world's fastest and steepest hybrid coaster, but they'll still do a big announcement with all the official stats, theme and name of the ride. BGT announced Tigris in September last year, but I'm hoping they announce RMC Gwazi earlier than that.
With the BGW announcement happening on July 30th, I hope we see the rest of the new for 2020 stuff across their other parks announced in the following few weeks!