HTML5 has been in development for several years now, and while it's had its fair share of criticism, it's impossible to completely shrug off the promise of a purely web-based platform that can be used to create and release games on any number of supported devices, from phones to PCs and beyond.
The W3C did note that the specifications are not yet the W3C standard, but that they are technically "feature complete," such that development studios can now plan and implement HTML5 with a stable target in mind.
The group is also keen to stress that it has big plans for the future of HTML5. A draft of HTML 5.1 is already available to view online, and the W3C intends to combat browser fragmentation by standardizing future definitions via interoperability -- that is, by which each browser and HTML5 implementation seeminglessly exhanges information between each other.
More recently, it appears that the negatively surrounding the language is subsiding. Tokyo-based mobile games behemoth Gree is currently expanding its efforts into HTML5 territory, while NonStop Games' Henric Suuronen suggested last month that most of the top-grossing mobile games of late could have been made using it.
For those developers who are considering reading up on HTML5, it's worth checking out our "7 Things To Know About HTML5" feature from earlier this year.