Well going on some source, they've already got DMC5 mapped out and possibly in the final stages of testing and whatnot. They were delayed with the development because Capcom requested they put more of a western twist into it, and apparently this, along with all the factors to consider like their strategic gameplan of when, how, where and what to reveal to the world about DMC 5, has a great influence on exactly when the actual game, or demo of the game, will be released.
I was hoping they'd give fans a sneak peek at SOMETHING early this year, but with Bayonetta coming out this month/next month and the ridiculous similarities it has to DMC, I doubt they will. Bayonetta fans would be 'meh, wanna-be Bayonetta game' = Capcom loses out on potential sales. Then again, it could have the reverse effect, and while the hype for Bayonetta is dying down, a trailer of DMC 5 could catch fans attention BECAUSE of the similarities and draw an entire fandom over to the devil side. I could weigh out the pros and cons of the marketing strategy, but it would be a waste of time and brain power because...well... because I'm not exactly one for sales pitches.
Now I got all that garb off my chest... I WANT A TRAILER!! Gah dammit Capcom! The waitin' is killin' me!!