An iCloud beta is available in a new version of iTunes.

Version 10.3 will include access to the service, which will enable Apple product users to automatically download their iTunes music purchases to their devices via wi-fi or 3G, free.

When activated the service will automatically send past and future purchases to every device or computer registered to the service. And in the Fall a service called “iTunes Match” will enable iTunes users to add up to 20,000 non-iTunes recordings to the iCloud service, without uploading these recordings to a server.

As previously mentioned, the basic iCloud service will be free to iTunes users whilst the Match service will cost $24.99 per year.

Note that this beta is not available through normal program updates. The most recent version available through the program is 10.2.2.