FL Studio 11.1.1 was one of the last updates in the version 11 cycle. It arrived at a time when music production was transitioning from purely 32-bit environments to 64-bit systems. By offering both 32-bit and 64-bit installers, it allowed producers to bridge the gap between legacy plugins and modern processing power.
This specific update was the "ultimate" patch for the 11-series: FL Studio Sound Differences: Why Version Matters FL Studio Producer Edition 11.1.1 -32-64-bitowy...