Facebook has abandoned HTML5 (for now), but more and more reports show that we can't deny that HTML5 will play a huge role in mobile app development for the next few years.
According to Tab Times, "HTML5 mobile apps will improve in 2013, and that can only be a good thing for developers and businesses."
Yes, that means cutting development costs, offering cross-platform support, and addressing fragmentation (although fragmentation issues are still in the works at this point).
It goes on to say that "a study from cross-platform developer Kony earlier this year suggested 80% of all mobile apps will be wholly or in-part based on the technology by 2015."
The number of so called native apps (iOS and Android) that are built on the HTML5 framework are increasing -- they simply have a native wrapper to get into app stores.
So HTML5 gets bashed in 2012...but this is definitely not the end.
In 2013, the technology will improve, more apps will gain visibility, and in 2014, the Worldwide Web Consrtium plans to bring about HTML5 app definitions and move toward standardizing.
This is an exciting time for the mobile world. If you know what's coming up, don't wait around and be left behind.