Looks like Direwolf20 v2 already had pre2a1, note the jar is labelled 'ee3-universal-pre1e.jar' but the mcmod version is pre2a1. I'm not certain entirely which version it is, exactly, but it seems to be the same version between v2 and v3 of Direwolf20 pack.
Is it just me or has EE3 been updated to pre2a1?