MIDI 2.0 is an extension of MIDI 1.0. It does not replace MIDI 1.0 but builds on the core principles, architecture, and semantics of MIDI 1.0.
A foundational architecture for MIDI 2.0 expansion is defined by the MIDI Capability Inquiry (MIDI-CI) specification. MIDI-CI allows Devices with bidirectional communication to agree to use extended MIDI capabilities beyond those already defined in MIDI 1.0, while carefully protecting backward compatibility.
MIDI 2.0 is not a stand-alone specification. Manufacturers and developers must have a thorough understanding of MIDI 1.0 in order to implement MIDI 2.0.