According to Google official blog the new and improved interface for writing emails in Gmail for iPad is announced. So, now in new Gmail iPad interface a full big size window appears to compose a mail message instead of a split screen between Inbox and composing area.
Now, whenever users decide to write a new email, a bigger window will pop-up. Users will not have to struggle writing their messages on a split screen anymore. As Google explains, “more text is visible at once and there are no more distractions with messages on the side.”
In following image you may find the difference in new Gmail Interface for iPad and old one. Click on image to enlarge.
Another full post image:
Visit gmail from iPad to experience the new change.