The Gmail app for iPhone and iPad: version 2.0 (gmailblog.blogspot.ca)

Maybe if there are notable speed improvements it will replace default Mail as my go to app for e-mail.

Seems like they already pulled it? I have it in my Updates section in the app store; but tapping "update" gives "The item you tried to buy is no longer available".

For some reason new emails aren't shown in the Notification center, nor any other indicator of a new email (iOS6).

Emails are shown cut off (if too wide, like this PhpFog announcement that they are killing off that brand in favor of AppFog)

Multiple account support (finally!) without a unified inbox?

And finally, I miss (Android style) swiping left-right to see other emails.