The Gmail for Android application has received a small update this evening. It probably does something faster, or better. Maybe there is a new feature or two. We have no idea, because they haven't posted any new features or changes. Google sucks at providing change logs.
We're letting you know in case it is something really cool -- though we're not seeing anything just yet, and we use Gmail a lot around these parts. And even if it is just some bug fixing, an update is an update. Grab it at the Google Play link to the left.
We'll come back and update once we know what the changes are.