The first impressions are really positive as far as the gameplay and the ruleset tie-in go (while taking freedoms, this certainly isn't a mess that was Sword Coast Legends), however there is a minor concern that Githzerai won't make it into the game as a playable race.
Considering how the original rules cover both of the Gith peoples, and how a Githzerai character would really nicely fit the narrative (the whole illithid predicament plus a potential clash with Lae'zel), while also paying homage to Dak'kon and Zhjaeve, it would be really nice to see them added at some point. The worry is that the race is already listed as "Githyanki", and not "Gith", so there may not be any plans to implement the Githzerai at all.