While the company has yet to provide a release estimate for the patch, it did issue a list of the "main points" that will be addressed, along with a promise that "there are further bug fixes and changes in the patch, such as a reduction to the effectiveness of the T17."
Those planned changes, as relayed via the community site, include:
Heavy Machine Guns. We will be introducing a fix to the current delay for an HMG switching windows when in a building and return proper operation for British emplacements and other units that were affected by patch 2.502. Fix the Pak 38 camouflage stacking bonus modifier that increases the gun's damage beyond the intended effect. Commonly known as the 'burst fire bug', we will address an issue that allowed some units to ignore their weapon cooldowns. We are introducing a new map for Panzerkrieg along with a fix for the free defensive infantry bug. Some balance changes will also be incorporated for the Panzerkrieg tanks.