I'm rather disapointed with these news too, having waited for such a long time for BS addon already, and now it changes to an independent product with (initially) nothing else than the KA-50 flyable. I was looking forward to some coop games with fighters providing air cover for ka's, but now that wont be happening any time soon...
In the other hand a "fresh start" has its upsides I guess. Like maybe we can get some really more detailed terrain at least, the current lock on ground detail level always seemed rather low for a helo sim. I wonder though, that if future addons for DCS take as long to develop as BS has, wont the current KA50 be way outdated after a few addon generations (in, say, 3-5 years?) just like the lock on content is now?
Now what would be really superb would be a Lock On source code release when the Ka-50 is out :D