A second version of the savanna methodology was made in June 2013.
The second version tidies things up a bit and importantly updates the values in the burning efficiency table - the values are a little higher which means a few more credits may be achieved - definitely use 1.1 if you are going ahead! The new version also makes other adjustments including when the late dry season may be declared to start and updating the reporting requirements. This document compares the first version (1.0) with the second version (1.1).
Further work is ongoing for new savanna methodologies for lower rainfall and carbon storage - but these new meths are likely to take a couple of years or so to hit the books.
More information on savanna story is at savanna explained.