If you haven't heard, August's issue of Legion of Super-Heroes V7 will be the last.
This is not unexpected; sales have been low for a while, and this Fatal Five storyline has felt kinda like an off-ramp. I can't really blame DC for doing this, although I can certainly blame them for letting things get to this state in the first place.
DC hasn't said anything about it that I know of, but we know the Legion will be back, sometime, in some way. It is inevitable. DC's had too much tied up in the Legion for too long to give up on them entirely. So we'll see what happens.
In the meantime, Legion Abstract will remain open. There's still more to talk about, and the future is not here yet.