As part of the new Office 365 service, changes will be made to the Office 365 plans. In short this means that the E1 and K1 plans will get full Office Web Apps (view, edit, create) replacing E2 and K2:

• Current E1/K1 will get E2/K2 functionality at the same low cost.
• Current E2/K2 customers will keep the same features, but at a lower cost (E1/K1).
• E2/K2 will be replaced by E1/K1 since they will then have the same functionality.

The new situation will become like this:

New Office 365 Enterprise Plans overview

PS: Besides the lower prices I’m also looking forward to the new Office 365 features that will be added when Office 365 will start using the Office 2013 (Wave 15) versions of SharePoint, Outlook, Lync, Office Web Apps. More about that soon.