The official Ravenshield website has been updated with some information about the problem with their v1.3 patch and what to expect for the next (v1.4) patch.
Patch 1.3: Two major issues were identified and reproduced after the patch was released: A server crash related to the arm patches & non-working CD-keys. Both problems are being investigated, and a fix will be issued as soon as possible.
Patch 1.4: Development is progressing well on patch 1.4. Many bugs related to the netcode have been solved, including reticule lock, zoom staying active, a grenade bug, and players getting stuck in ladders. Some game improvements have also been made, including removal of trigger lag. Players will automatically switch back to his/her primary weapon after throwing their last grenade or other disposable weapon (
thanks Bluesnews).