Apple has released OS X Lion 10.7.2 update that includes general operating system fixes along with support for iCloud and Safari 5.1.1 update. According to the release note, iCloud on OS X Lion includes the following features:

• iCloud stores your email, calenders, contacts, Safari bookmarks, and Safari Reading List and automatically pushes then to all your devices.
• Back to My Mac provides remote access to your Mac from another Mac anywhere on the Internet.
• Find My Mac helps find a missing Mac by locating it on a map and allows you to remotely lock the Mac or wipe all its data.