Yes, it's not at all surprising to see that Android is now the hottest selling OS on any handset. Just a few months ago all the naysayers were were digging it an early grave or saying it was a still birth compared to Apple. Sometimes things just take time to be nurtured along before the real growth spurt happens like we're seeing now.
Now, not only does Android dominate the landscape, but it's starting to send other OS's to their grave, such as the once popular Symbian has been recently pronounced dead as partners pulled out.
Which immediately brings to mind the HP $1.2 Billion Palm debacle that fits into the 3% of "other", will it be the next OS to be tossed on the bonfire?