HTML 5 will take web development a large step forward into innovation. The new version of HTML will help do some of the things that used to only live in the domain of Flash--a technology that struggles to remain relevant in the wake of Apple's iPhone and iPad exclusion of Flash.
In HTML 4 attributes were designed to be universally applied to all HTML elements. However, in HTML 5 global attributes have been reduced so that that web developers can be more specific with how HTML elements are rendered. The truly global attributes from HTML 4 that are included in HTML 5 are the same in both versions of HTML.
Shared HTML 4 and HTML 5 attributes:
New Attributes in HTML 5:
The new breed of HTML 5 attributes will allow for more advanced and faster programming of internet applications. As businesses move many of their information systems away from closed networks and into cloud environments or SAS environments, HTML 5 will help to spawn web design and development innovations. HTML 5 will be an exciting step for improving both public facing websites and applications as well as closed door systems such as web portals and intranets.