An update to Gmail for Android has leaked in the wild. The leaked Gmail 2.2.1.apk only supports Froyo for now and brings UI tweaks. It’s not released to public as yet so you won’t find it in Android Store. You can however follow the link below to download Gmail 2.2.1.apk from RapidShare, MegaUpload and other file sharing sites:

Download Gmail 2.2.1.apk for Froyo

Update: Gmail 2.3 is now available in Android Market and brings in support for Priority Inbox and other enhancements.