The research firm International Data Corp reported yesterday that the tablet market continues to soar, with worldwide shipments this year expected to be 107 million, and next year 143 million. And the iPad's share of the market is expected to be 62.5% this year, which is an increase over last year's 58.2%. So what about the Kindle Fire and the vaunted Android competition? They're actually losing market share, rather than making the gains predicted earlier. Reports last month said that sales of the Kindle Fire have plummeted since the Christmas quarter. The iPad rules. And according to forecasts, it will continue to rule. So in this environment it will be very interesting to see what Microsoft will announce on Monday. The rumors are saying they'll be announcing a tablet. After all, a main feature of the forthcoming Windows 8 operating system is that it will have the same interface on tablet and desktop computers, so we have to expect that we'll be seeing Windows 8 tablets soon after the software is released in October. The rumor is that Microsoft will be selling its own branded tablet computer. This is getting interesting, but I'm betting the iPad will continue to dominate.