With this 8th major release of the big-cat OS, Apple is including even more than 250 functions. Some allow user interface adjustments, whereas others are smaller refinements with the clear objective of ensuring actions easier. Priced at $29.99, the upgrade adds plenty to make it beneficial for many Mac users, however those that do not have Snow Leopard will certainly need to pay for that upgrade also. Lion can only be downloaded through the Mac Application Store, which was presented with Snow Leopard.