Being a user forum no one here would know "when" or "why" Apple decides to do anything. You can send feedback to Apple though http://www.apple.com/feedback/
i bought mine on release day and haven't "wanted" for the keyboard functionality. But can understand why some users like you could be frustrated with losing the feature. personally, I don't think it's a reason not to buy the device but everyone should be aware in case it does impact their decision...