Sweet, diluting of the BF franchise! MILK! MILK! New BF every year!
You must have missed the part where there hasn't been a BF release every year.
So, I'll update you: there hasn't been a BF "proper" every year. I don't expect them to commence with that.
There have been back-to-back years of Battlefield franchise games, but not true Battlefield games. If you ignore titles like 1943, Play for Free, Battlefield Online, etc, the main titles are typically spread out a little bit. BF3 -> BF4 will be the narrowed launch gap between successive BF-proper titles, with two years in-between.
They might be dropping the concept of titles like the Bad Company series now, in favor of working on true Battlefield titles. I wouldn't expect them to even dream of pushing out a BF5 in 2014 (after a 2013 BF4).
EA is working on an annual release cycle to compete against Call of Duty - but CoD even has an on/off pattern. It's one series, then another... both just fall under the same general brand. EA is working on an on/off cycle with two brands, or... a BF/other/BF/other cycle. They are clearly hoping to make something out of the Medal of Honor brand. EA/DICE will make a BF game every other year, and support that with regular paid-content releases, and EA/Danger Close/other will do the same with whatever brand they can turn into a successful product.
We're gonna have to look at numbers in a few months to see how well MoH:W actually sold, and more importantly, how much multiplayer activity it has held onto. If it looks like a sinking ship, I don't know if EA will continue to push that brand, as that will be a second title of a relaunched brand that doesn't perform well. At that point, I would think the negative connotations with the brand will reflect on its value, and they'll need a new approach. Hell, I wouldn't doubt if, in the event they can't re-ignite the MoH flame, they'll turn some dev (possibly Danger Close still) on the Battlefield franchise. Take a true CoD-style, On/Off release cycle: BF4/5/6/etc are DICE titles, and in-between those releases, the other studio(s) release BF: Bad Company 3/4/etc, or BF:Something, possibly even BF:AnotherGenericShooter1/2/3.
My money is on proper Battlefield games releasing, at most, every other year; with expansion packs/DLC releases occurring throughout most of the in-between period.
Regardless, BF proper games are going to be an eccentric mix of play styles. There will continue to be large vehicle-based maps, but death-funnel micromaps are here to stay as well. The market hath spoke. And hell, BF3 gets the most play of anything on my PC - simply due to the fact that all those styles are present in one game. I can play a slow grind across a large map, or I can run around like I'm on crack through funnel after funnel in a small indoor/mini outdoor map like a generic CoD game. I can play with vehicles or play on infantry-only maps.
I just hope they continue to support PC-specific bonuses, like control options (mouse support rocks) and 64 player servers. MoHW really dropped the ball. The mouse feel is horrendous, and you can have at most 20 players on a server. That's simply retarded and backwards.