@article {2302.01317, archivePrefix = {arXiv}, eprint = {2302.01317}, primaryClass = {hep-ex}, author = {Brian Bockelman and Peter Elmer and Gordon Watts}, title = {IRIS-HEP Strategic Plan for the Next Phase of Software Upgrades for HL-LHC Physics}, year = {2023}, url = {http://arxiv.org/abs/2302.01317} }