It seems that new creators on "Green Arrow" and "Superman" were only the start of creative changes on DC Comics' New 52 line of relaunched superhero comics, though some changes are less permanent than others.

After early word broke out the likes of Keith Giffen, Dan Jurgens and Ann Nocenti taking over some titles for the second half of the line's first year, the publisher has been slowly unveiling more new creators to fill in for or outright replace previous creative teams in advance of February's solicitations.

The moves are highlighted by artist Gene Ha filling in for Co-Publisher Jim Lee as artist on "Justice League" for issues #7 and 8, which was announced today on DC's The Source blog. But while the Co-Publisher is expected to return to the pages of comics #1 title come April's #9, other books will be seeing a creative swap on a more permanent basis. In recent days, The Source also revealed that James Robinson will take over from Ivan Brandon on DC's "Men At War" comic with a new backup written by JT Krul in February. Meanwhile, artist Harvey Talibao will draw "Green Arrow" starting with issue #7 as Dan Jurgens moves on to "Superman."

And of course, all of this has hit in the wake of creative changes on titles like "Firestorm," "Stormwatch" and "Legion Lost."

While some of these moves are obviously made due to time constraints and work commitments, others have come out of the blue which is surprising in an era where many believe that DC's line is selling strong across the board. Only time will tell if more creative team changes are in the offing for February and beyond.