I know, I know, I'm a little late on this one. But the shedding of the 'beta' tag for GMail co-incides suspiciously with the announcement of the Chrome OS, don't you think?
Also, it's not just GMail, but a whole host of products that are being stripped of this rather pointless little tag. This was required if the big bosses at Google were serious about selling Gmail/Apps to corporates. No one spending hard-earned / stolen money would want to buy 'beta' products for their organizations.
Trying to integrate these things into one saleable package, maybe, Google people? Buy Chrome + Apps + Chrome browser + Calendar for next to nothing? It's possible, I suppose - most of these are free, supported by Google Ads right now anyway.
Our times are about to get interesting.