Mapping Safari releases to Safari TP versions

safari-release-notes-history+stable-technical-preview-mapping.md

Safari release notes history and Technical Preview versions -> release version mapping

Official docs

• safari releases
• safari technical previews
• webkit status
• webkit blog

Safari release history

Release	date	notes	TP version	Chrome stable around that time	HTML5test score (HTTP, HTTPS)	Kangax ES6 score
15.0	2021.09		123-126?	M93
14.1	2021.04	notes blog	110-122	M90
14.0	2020.09	notes blog	99-109	M85	451, 492
13.1	2020.03	notes blog	90-98	M80	449, 490
13.0	2019.10	notes blog	77-89	M78	446, 487	99%
12.1	2019.03	notes blog	59-76	M73	459, 474	99%
12.0	2018.09	notes	48-58	M69
11.1	2018.03	notes blog	37-47	M65	454, 469	98%
11.0	2017.09	notes blog	21-36	M61
10.1	2017.03	notes blog	14-20	M57	407	98%
10.0	2016.09	notes		M54
9.1					368	53%
9.0
8.1
8.0					352	17%
7.1					347	17%
7.0

Mapping AppleWebKit/ from useragent string to Safari version

Based on my tests (crunching through the logs and looking at useragent) there's no 1-1 correspondence between Safari version and AppleWebKit version (sometimes the same version of Safari is observed with multiple webkit versions in the wild - I don't quite understand this), but for 95%+ of the cases, the following holds:

• Safari 11.1 and all newer have AppleWebKit/605.1.15 (this part of UI is now frozen! ^)
• Safari 11.0 seems to be mostly AppleWebKit/604.*
• Safari 10.1 seems to be mostly AppleWebKit/603.*
• Safari 10.0 seems to be mostly AppleWebKit/602.
• Safari 9.1 seems to be mostly AppleWebKit/601.*
• Safari 9.0 seems to be mostly AppleWebKit/601.*
• Safari 8.0 seems to be mostly AppleWebKit/600.*
• Safari 7.0 seems to be mostly AppleWebKit/537.*
• Safari 6.0 seems to be mostly AppleWebKit/536.*

^ on iOS, there are two misaligned versions sigh: AppleWebKit/605.1.15 ... Safari/604.1

Sources

• Release dates based on macOS release dates from Wikipedia (e.g. https://en.wikipedia.org/wiki/MacOS_Catalina)
• Mapping of TP contents to release contents based on webkit blogs
• HTML5 tests performed on http://html5test.com/ and https://html5test.com/ via BrowserStack on 2020-05-12. Safari 13.1 and 14.0 tested on 2021-01-21. Max score is 555.
• Kangax ES6 tests performed on https://kangax.github.io/compat-table/es6/ via BrowserStack on 2020-05-12.