ALEXA SXT cameras can record ARRIRAW just like the XT cameras could, but now with higher frame rates:

16:9 ARRIRAW up to 120 fps, 6:5 ARRIRAW up to 96 fps, 4:3 ARRIRAW up to 96 fps and Open Gate ARRIRAW up to 90 fps. 

ALEXA SXT cameras can record ProRes in HD, 2K Cine, 3.2K, 4K UHD or 4K Cine and also in the anamorphic sensor mode 6:5 in 2K and 4K. And they can do that with all high-end ProRes flavors from ProRes 422 to ProRes 4444 XQ.