More Evidence for Gmail 2.0

I have noticed one more piece of evidence that points to a new version of Gmail. It is not what they have updated but what they have neglected to update. You still can't open a PPT attachment as a Google doc yet.
When you have a word or excel attachment, Gmail gives you the option to open it in Google Docs.
But when you open a PPT file it still is using the old basic slideshow viewer and not Google Presently or Google Docs, which has had a presentation function for over a week now. Why would Google leave this when they just released a new product for Google Docs. You would think they would be giving the product as much of a chance to get used as they could. But they aren't. That probably means that there is no point in having the Gmail programmers stop working on Gmail 2.0 to fix update the old version that is just going to be replaced soon.