Update 23.8.0 also serves as a vehicle for some major changes to Revenant's skillset, some quality-of-life tweaks, various optimisations, and other tidbits that aren't quite as exciting as a new Deluxe skin, but are necessary all the same.
For a quick primer, Nezha's been given more health at the cost of shield reduction, and its abilities have all been given a fairly substantial once-over. Expect much-improved casting phases in general, and brand new functionality awarded to just about every skill. Nezha will now serve as a light CC/support Frame, with a particular niche in mobility.
Similarly, player feedback has been taken into account when it comes to the Revenant, whose Thralls will now be able to cast projectiles upon death, and can then be used as IEDs by hitting them with Danse Macabre. Revenant can now also recast its Mesmer Skin, and its Reave will be more useful as a life-saver.
If you're very much interested in getting a Nezha Warframe of your very own, but are unsure on how to go about this business, be sure to reference our quick and dirty cheat sheet. Otherwise, stay tuned for more news on Warframe's upcoming Fortuna update.