Here you can see a full history of release notes for each of the helioCORE™ software version releases.
helioCORE_release_notes_2_3_00.pdf
helioCORE_release_notes_2_2_56.pdf
helioCORE_release_notes_2_2_55.pdf
helioCORE_release_notes_2_2_53.pdf
helioCORE_release_notes_2_2_52.pdf
helioCORE_release_notes_2_2_51.pdf
helioCORE_release_notes_2_2_49.pdf
helioCORE_release_notes_2_2_47.pdf