This page lists the P2 Server release notes available in the Help Center:
| Server Release 4.5.5 | 9 February 2018 |
| Server Release 4.5.4 | 6 December 2017 |
| Server Release 4.5.3 | 29 September 2017 |
| Server Release 4.5.2 | 31 July 2017 |
| Server Release 4.5.1 | 6 June 2017 |
| Server Release 4.5.0 | 31 March 2017 |
| Server Release 4.4.6 | 17 February 2017 |
| Server Release 4.4.5 | 30 November 2016 |
| Server Release 4.4.4 | 30 September 2016 |
| Server Release 4.4.3 | 31 August 2016 |
| Server Release 4.4.2 | 3 August 2016 |
| Server Release 4.4.1 | 19 June 2016 |
| Server Release 4.4.0 | 14 April 2016 |
| Server Release 4.3.2 | 5 February 2016 |
| Server Release 4.3.1 | 28 August 2015 |
| Server Release 4.3.0 | 10 April 2015 |
P2 Explorer 4.6.0 (4 May 2018) consolidated what was previously three installers into one, and combined the three separate databases of P2 Server, P2 Explorer, and P2 Security into a single database. All release notes since May 2018 are now contained in the Explorer Release Notes for the version.