Of course, there is nowhere to hide from MOTOBLUR, as Motorola has decided to leave the UI on the European version, along with its resizable widgets. It can tether wireless internet to five devices at once, but it depends on the carrier whether the feature will be allowed.
The major difference is that the MILESTONE 2 will shoot 720p HD video when it ships, so hopes are up a firmware upgrade or a cooked ROM will unlock this feature for the DROID 2 as well, since the shooter is absolutely the same. Motorola will ship it with an 8GB microSD card, and the internal memory is listed as "up to 8GB". Have a look at the promo video below, very Flash-y.
Dare to guess the difference in keyboards? MILESTONE 2 has the € sign up left.
Motorola DROID 2 Specifications | Review
Motorola MILESTONE 2 Specifications