The starter pack contains all that there is so far, which is (for both Amiga and PC):
- English league, all divisions, updated with Asamoah Gyan gone (had to make an exception there)
- Italian league, all divisions
- Spanish league, all divisions
- Modified SWOS2 (Amiga) and sws.exe (PC) game files to fit the 2011-12 league structures (including the ones still to come). These also contain official FIFA nationality codes, which you'll want for the new data, since Montenegro and Libya have replaced two defunct codes. That's why van Persie's nationality is 'NED' and not 'HOL' in the Arsenal screenshot, if you'd spotted it. The new league data files may not work properly unless you use these files, due to differences in league structures (instructions included).
- Classics league, which replaces the El Salvador league - this is a pool of legendary retired players arranged into 46 competing clubs. You can buy greats from it in career mode or just ignore it; it won't affect the rest of the game.
The rest of the leagues (and national teams) will be released over the next few weeks and will work with the included SWOS2/sws.exe files.
EDIT: note that career mode will NOT work with the 2011-12 game files until the remaining leagues have been released, due to changes in league structures from previous seasons. All other game modes will work fine with whatever leagues have so far been released.
EDIT 2: link deleted; newer version now available.