Apple has just updated their app sales agreements with developers, and have included something new to target educational institutions. Developers now have the choice to offer their apps at 50% discounts when multiple copies are bought by schools. This is great for schools who buy up iOS devices to let the students explore educational apps. Developers simply need to agree to the new paperwork, then check a box to get the discount system running for their apps.
The new developer agreement reportedly does not include any other significant changes or enhancements.
Update: Apple has announced that the 50% off discount will apply to bulk downloads of 20 or more.