The new announced Sony RX1R III now already listed at Amazon US. You can check this link below to pre-order it.
https://www.bhphotovideo.com/c/search?Ntt=dp&BI=8941&KBID=10361&SID=12345&DFF=d50
^ This. Also, while speed is key, dont forget about the basics. I have been very satisfied with the official batteries over the years because I value reliability over saving a few bucks on generic ones that might fail or swell in the heat. Here is my shortlist for staying within a reasonable budget while keeping the gear safe:
Usually pre-orders go live within 24 hours of the page appearing, so keep checking back. One quick tip: with that high-res sensor, you definitely want to grab a fast card like the Sony TOUGH-G series SDXC UHS-II 128GB. The buffer on these compacts can be a bit of a bottleneck if you use slower media. Also, just a heads up that these tiny bodies tend to struggle with heat dissipation during long 4K sessions, so keep that in mind if you plan on using the Sony RX1R III for more than just stills.
Thanks, when will pre-order open?