Apple took a 68.3 percent share in the second quarter, up about 3 percent from the previous period, according to research firm IDC. Android tablet share on the other hand dropped significantly, falling to 26.8 percent from 34 percent in the first quarter.
Some of this drop could be explained by the release of the RIM PlayBook during the period. While sales of the device haven't been exactly what RIM was looking for, it still managed to grab about 4.9 percent of the market.
Apple has a predominant "in the clubhouse" lead on the tablet market, making up 68%. The largest next competitor who owned a lion market share is Android; but Android's tablets are fragmented amongst at least 8 different vendors. While RIM's 4.9% share doesn't seem significant, it's a big leap from 0%, and more then that, considering the number of vendors on the Android tablet, it would likely represent a real run at the largest tablet vendor (probably Samsung at the moment).
Android's nearly 8% drop in market share tells us that right now, consumers aren't very happy with the Android tablet experience. It was tried, and it didn't get "over the hump" to continue to grow.
I don't think RIM is in a place to "challenge" Android or Apple. But I think if RIM felt it could get to 8%-10% market penetration it would absolutely be a larger vendor then any Android platform host alone; and that may be all they need to tilt the tables.
I'm more convinced that the fractured ecosphere presented by Android is going to grow more and more problematic, not less and less as time goes on.