Unbelievable, this package will not become available in a lot of countries.
Microsoft provides updates about the upcoming Windows 7 Anytime Upgrade and Family Pack editions. Here's a snip about the Family Pack, it costs $149.99 and features three Windows 7 Home Premium licenses:
Today, most homes have more than one PC in them. When you run Windows 7 on more than one PC on a home network, you can do more with features like HomeGroup. HomeGroup allows people to connect to PCs on their network and share files, music and photos with the whole family