June 16, 2026 : This amendment (02), incorporates the following changes: Updates the language within the ISO to clarify out-of-scope efforts, update the program schedule, and clarify proposal review criteria. The following ISO sections are updated: Sections, 1.2.5, 2.2, Figure 2, and 5.4.2. All other terms and conditions remain unchanged. May 08, 2026 : This amendment (01) updates the HEARING website links. May 07, 2026 : The Advanced Research Projects Agency for Health (ARPA-H) posts this funding opportunity in support of the Hearing Enhancement through ARtificially Intelligent NeurotechnoloGy (HEARING) Program. ARPA-H anticipates multiple awards with Other Transaction (OT) award types resulting from this announcement. Interested parties are invited to review the HEARING Special Notice ARPA-H-SN-26-154 and Innovative Solutions Opening (ISO) ARPA-H-SOL-26-154. Parties interested in submitting a proposal in response to the ARPA-H HEARING ISO are required (mandatory) to submit a solution summary. No awards will be made, or funding provided as a result of solution summary submissions. The Proposers' Day event will take place in Arlington, VA. The event is intended to facilitate teaming and foster a greater understanding of the HEARING Program.