Adobe launches online version of Acrobat
Not sure what Acrobat 9 and the online options are about but it includes Buzzword and Store. Acrobat seems to be a word for anything new. Not much about Mars I can find so presumably the file format is the same.
I am now in Cologne, there is web access in the hotel, but I think I will take a look at the Dom etc and find out more about Acrobat tomorrow. More on the Adobe site.