No, they've learned their lesson this time. All the major continuity gliches have as of now been explained, usally by Geoff Johns. Hawkman, Power Girl, the JSA, Wonder Woman, they've all been cleared up. And anything else lingering since COIE (like the Doom Patrol) can now all be explained by, say it with me, Superboy Prime punching the time stream. And it looks like the minor changes to history due to this crisis are all just bringing things back to the 'classical' status quo.
But it leaves most of us in the dark as far as which stories are now considered canon and which aren't.