React, Flux, GraphQL, Hack, HHVM...? All of this and more!
DHTML is a term that was used in the late 90s and early 2000s to describe any kind of functionality that were somehow out of the realm of regular web site browsing. This went from dropdown navigations to snow flakes falling from the top of the screen to birds flying out of a banner to follow your cursor. It was really just a hard-to-define buzzword like Web 2.0 was later on.
Rest APIs continue to be on everyone's lips and everybody seems to have valuable data to distribute to the world. While this may be true for many cases, the boring tasks of specifications and so on are often left half way.
PHP 7 is a large update to the pioneering language that used to create and operate millions of websites and web applications. O'Reilly is a known publisher of books and they have hooked up Davey Shafik, a PHP veteran to write a free eBook about PHP 7.
Facebook has been very active in providing Open Source solutions for technical problems. Now they are stretching out of the pure technical domain and moving forward by offering a free (but not Open Source) software called Origami.