From the notice

The Defense Advanced Research Projects Agency (DARPA) anticipates funding a limited number of proposals under this solicitation. Specifically excluded is research that primarily results in evolutionary improvements to the existing state of practice. Proposed research should investigate innovative approaches that enable revolutionary advances in science, devices, or systems. The Strategic Technology Office (STO) at DARPA regularly publishes solicitations requesting responses to specific program topics. This announcement seeks revolutionary research ideas for topics not addressed by ongoing STO programs or other published DARPA solicitations. To avoid proposals that duplicate existing activities or are responsive to other published STO solicitations, potential proposers are highly encouraged to review current STO programs and solicitations, respectively listed at [link] and [link] Contacting STO program managers to discuss their research interests is also encouraged. A current list of program managers is available at [link] This Innovation Solutions Opening solicits under the procurement authorities of 10 U.S. Code § 4001, 10 U.S.C. § 4021, 10 U.S.C. § 4022, and 10 U.S.C. § 4023, that allow procurement activities authority to enter into agreements with industry, academia, and other organizations to fund research and development through cooperative agreements, Other Transaction Agreements (OTAs) for research, OTAs for prototypes, and procurement for experimental purposes.

Read the whole notice and its files on SAM.gov ↗