Craze for Apple's iPad is so great that no rival tablet could gain a considerable market share. Be it Motorola, Acer or RIM, all have failed to gain the desired amount of share of the global tablet market.

Canadian manufacturer RIM could ship only 200,000 units of its BlackBerry tablet. Apple sells the same amount of tablets in just three days. The HP TouchPad tablet is the latest example of those tablets that succumbed to the iPad's popularity.

However, market analysts have high hopes from online retailer Amazon's much rumored Kindle tablet.

Amazon hasn't announced any plan about its potential Kindle tablet, but mysterious invitations to a press event on Wednesday, September 28, in New York has fuelled speculations that the event will be used to unveil the tablet in question.

Like Apple, Seattle-based Amazon is also riding high, pocketing record revenues and seeing their stock market valuation touching new peaks. In addition, the online retailer has ample resources to draw people's attention towards it potential tablet.

Analysts predict that Amazon's 7-inch tablet will just be another Kindle, but it will come equipped with a touchscreen and run Android OS.

The Kindle tablet will undercut iPad in price as it reportedly will start at around$250 as compared Apple iPad's starting price tag of $499.