Apple introduced a new version of the Safari browser, called Safari Technology Preview, is aimed primarily at developers. A test version will allow experts to not only get access to web-based technologies of the future and assess the latest features, but also to experiment with them. Safari Technology Preview can work side by side with the existing version of Safari, and the browser allows you to save all your local data, including history, bookmarks, cookies, and cache.
In Safari Technology Preview also provides the ability to synchronize bookmarks and history through iCloud. Externally, the new icon resembles Safari icon, but instead of the usual blue color purple was chosen. Safari Technology Preview can be downloaded today at the Apple portal . Safari download iphone
Source : macrumors.com