ISO is expected to announce the vote results today. Meanwhile, here is a map showing inofficial estimations (may be incomplete relative to the figures here). According to the voting rules there needs to be a qualified majority (2/3) of all participating members that vote. Of those, currently there seems to be 12+ NO votes, and 6+ abstenstions, leaving at the most 41-12-6=23 YES votes. 23+12=35, and 23 / 35 is 65.7%.
If these figures are correct, it seems that OOXML is not approved at this time. However, the possibility of involving a so called Ballot Resolution Meeting (BRM) has been mentioned. Holding a BRM could mean some NO votes become YES votes, when underlying concerns are addressed. This could mean the process continues for several months – more on this later if so.
Update 4 Sept 14:25: more detailed reports confirm OOXML has not received support on any criteria. 73.91% of the votes of the participating members and
51.61 53.13% of all votes approve of OOXML. 3/4 and 2/3 majorities, respectively, are necessary. At the time of writing, ISO is yet to announce the official results, or any indications on whether a BRM will be held or not. At this point, my feeling is that (while gaining approval later is theoretically possible) holding one would be less than constructive use of their time.
(Sweden is not listed in the table of votes, since they decided to withdraw their decision completely. “Abstention” here means the respective member body has submitted their decision to abstain.)