The clue provided by Henrique led me to the "SAP HANA Central Note" which is updated with (almost) every release.
http://service.sap.com/sap/support/notes/1921675 (Service Marketplace login required)
Subscribing to this release note should get you an email every time HANA is updated.
The table below is a partial release listing based on the links in this note and is the table I was after. Perhaps this will be helpful to others.
| Revision/Version | Release | Release Note Date |
|---|---|---|
| 1.00.46 | SPS 05 | 13 December 2012 |
| 1.00.47 | SPS 05 | 12 December 2012 |
| 1.00.48 | SPS 05 | 14 January 2013 |
| 1.00.49 | SPS 05 | 22 January 2013 |
| 1.00.51 | SPS 05 | 18 February 2013 |
| 1.00.52 | SPS 05 | 8 March 2013 |
| 1.00.53 | SPS 05 | 2 April 2013 |
| 1.00.54 | SPS 05 | 17 April 2013 |
| 1.00.55 | SPS 05 | 26 April 2013 |
| 1.00.56 | SPS 05 | 13 May 2013 |
| 1.00.57 | SPS 05 | 11 June 2013 |
| 1.00.58 | SPS 05 | 13 June 2013 |
| 1.00.60 | SPS 06 | 28 June 2013 |
| 1.00.61 | SPS 06 | 17 July 2013 |
| 1.00.62 | SPS 06 | 30 July 2013 |
| 1.00.63 | SPS 06 | 21 August 2013 |
| 1.00.64 | SPS 06 | 3 September 2013 |
| 1.00.65 | SPS 06 | 13 September 2013 |
| 1.00.66 | SPS 06 | 14 September 2013 |
| 1.00.67 | SPS 06 | 27 September 2013 |
| 1.00.68 | SPS 06 | 17 October 2013 |
| 1.00.69 | SPS 06 | Date not listed in Central Note |
| 1.00.70 | SPS 07 | 3 December 2014 |
| 1.00.71 | SPS 07 | 20 February 2014 |