Apple, yesterday evening, launched the latest beta version of iTunes to developers. Beta 6.1 is essentially the same as the previous beta, except with one interesting addition: iTunes Match. This new feature will essentially – when launched to the public – allow you to have a copy of all your music from iTunes in the cloud. For a full demonstration of how it works, check iDownloadBlog’s video below, it’s a great comprehensive review and it’s not too long either. iTunes Match will launched in the States only initially, with a $25 annual subscription fee. Other international countries should see the service at some point next year, once Apple has ironed out all the licensing legalities.