Motorola's Mesh Networking Group (Motomesh) has committed to supporting 802.11s: They say their current solution is draft compliant, although the IEEE task group S's notes from the March 2006 meeting states that a merger of two outstanding proposals was successfully made and "confirmed unanimously at the March meeting as the starting point for the 802.11s standard, although much work remains."
Motomesh is confident that their architecture allows over-the-air updates to whatever the draft resolves itself to be. It's unclear why being the only company to be draft compliant before "much work" has been processed on the draft is a selling point over simply stating that the products will be upgradable to the ratified version or later, more fully settled drafts.
As Phil Belanger, formerly of Wayport, Vivato, and BelAir, noted in a white paper published on this site a few weeks ago, 802.11s may have a lot of impact in devices meshing across homes or outdoor environments, rather than any impact on interoperability of mesh nodes that form metro-scale or enterprise-scale networks. It's about the end devices rather than the core mesh nodes, in other words.
Motomesh seems to agree.