Not necessarily, Amazon DE still sells 1.0.55 RD23. Perform the initial router configuration w/o connecting to the internet. The router will upgrade to version 1.0.92 if you connect the internet to the WAN port.
You can downgrade via the stock out the box Xiaomi interface, see details in the Wiki. The MiWiFi repair tool also works well for downgrading, see instructions here. The stock firmware can be found in the Wiki.