Here are release notes for SymPy releases.

Release Notes for 1.15.0 (development)

Release Notes for 1.14 (development)

Release Notes for 1.13.3

Release Notes for 1.13.2

Release Notes for 1.13.1

Release Notes for 1.13.0

Release Notes for 1.12.1

Release Notes for 1.12

Release Notes for 1.11.1

Release Notes for 1.11

Release Notes for 1.10.1

Release Notes for 1.10

Release Notes for 1.9

Release Notes for 1.8

Release Notes for 1.7.1

Release Notes for 1.7

Release Notes for 1.6.2

Release Notes for 1.6.1

Release Notes for 1.6

Release Notes for 1.5.1

Release Notes for 1.5

Release Notes for 1.4

Release Notes for 1.3

Release Notes for 1.2.1

Release Notes for 1.2

Release Notes for 1.1.1

Release Notes for 1.1

Release Notes for 1.0

Release Notes for 0.7.6.1

Release Notes for 0.7.6

Release Notes for 0.7.5

Release Notes for 0.7.4.1

Release Notes for 0.7.4

Release Notes for 0.7.3

Release Notes for 0.7.2

Release Notes for 0.7.1

Release Notes for 0.7.0

Old Release Notes

For information on writing release notes, see Writing Release Notes.