What's interesting is that the blog post also says they have renamed the game. As you might be aware, Mercs is actually part of the Commando series. In Japan the games are simply called Wolf of the Battlefield: Commando 1/2/3, but outside of Japan, the naming is a bit strange - The games are called Commando, Mercs and Wolf of the Battlefield: Commando 3.
Capcom doesn't seem to want to drop the Mercs name, so instead of simply renaming it to Commando 2, they've opted for a different approach - The game will be released as Wolf of the Battlefield: Mercs.Obviously, this means that if Commando is released on VC it'll most likely be similarly renamed. We have changed the game's title on the site to reflect this, of course.
Source: Capcom Unity