According to somua.com EA/DICE have registered a Trade Mark and Service Mark for "Battlefield 4" last thursday. While there hadn't been much debate over it, these registrations can be interpreted as the official confirmation that the upcoming Battlefield game will indeed be named Battlefield 4.
What struck us as more interesting was the announcement that the first Battlefield 4 visuals are to be shown on the 15th of March. The reveal will take place on a website. There is no information regarding the location as of right now.
We are being teased with the promise of a new dog tag which will be awarded to users who participate in the release event
Stay tuned, follow oscarmike.com on twitter and facebook. We will keep you up to date.
Thanks to WolfskiLux for bringing this to our attention.
Update: Scroll down to Premchand's post for the first BF4 related images.