For PHP it's worth looking at
(a) the Page Manager where one can choose the extension used for individual web pages, and
(b) the types of file one can now create or put in the Resources box.
For me one of the really super changes is in the Element panel which now has a Content switching box. It will quickly be realised how that can be used to introduce special code (e.g. non-breaking spaces, target="iframe-name") directly into Heading, Text and Paragraph elements. The old method of using HTML elements for such things was a nuisance as one had to set the font-family manually, then make the HTML element match surrounding paragraphs or the like etc.
Inger shows a clever use of the Content switching box with PHP 'includes' at
https://mock-up.coffeecup.com/f-comps/f … ludes.html (it's also shown for the other frameworks and Frameworkless).
The Element panel now also has boxes to allow Before and After items.
The above are just things I've found and started using. I too look forward to seeing the full list of changes, but wouldn't now want to be without the above items.
Frank