Few months ago we heard rumours that Dell will launch a windows 7 tablet that would be targeted to the corporate world and it would be more or less like the HP slate which was also launch recently. According to the previous rumours this tablet was supposed to launch in the first half of this year but they had not announced about it officially so technically it is not a delay but most people expected it to come in April or in May.
Now may be this tablet may would now launch in September which would come with Windows 7.Also apart from this the company is expected to launch a Windows 8 tablet too which would have the same hardware.And Windows 8 tablet would come in 2012.Dont think these tablets would be in competition of iPad ,I think they are rather replacements of net books.