There never will be a Warcraft 4. Much like how The Old Republic is supposed to be Kotor 3, 4, 5, etc the same thing falls in line for WoW. Plus WoW has all but killed the original Warcraft lore that was set in stone by the first 3 games that now I don't even know where we stand story wise (hell they're currently trying to write out the whole demon blood tainting for the orcs). Plus, lets face it, Warcraft will never be the same now that it was made into an MMO (something I hope never happens for Starcraft). Honestly I quit playing WoW due to Blizzard's complete disrespect for the original lore they wrote for the original three games (lore that made me love the series).
I won't be getting Hardline. The beta was fun but it's just not Battlefield for me. Seems to cliche to me. I'll most likely be buying Battlefront depending on it's release date (I have the FF Expansion (both PS4 and PC versions), Legacy of the Void, and The Division to buy next year) and whenever they announce it BF5 (which has been confirmed but it's still in early development).