Parenthood is back, but coming up a little short...

While the fate of many NBC series still hang in the balance, there have been plenty of rumors, and picks ups so far this week. With seven brand new series, five of which are comedies, it seems the peacock network it ready to try and have a very successful 2012-13 season. Now, the network has not only announced two of their hit series will be getting additional seasons, but they’ve also managed to pick up two more dramas in the process.

As THR reports, NBC has announced today that they’ve renewed Parenthood for a fourth season, while 30 Rock will be getting a seventh and final season. With the two series renewal also comes a brand new drama called Do No Harm, which sees one Rescue Me alum returning to television in a regular role, and Infamous which also sees an Alias and Eli Stone alum doing likewise as well.

Parenthood’s renewal is only for 15 episodes, and was subject to possible cancellation rumors around the internet in the past few days. There’s no word on whether that fourth season will be extended at all, but then again this could tie into the word that NBC may possibly be axing the drama. 30 Rock, on the other hand, may premiere at mid-season with only a 13 episode order. Alec Baldwin began to toss around the notion the acclaimed comedy would be ending upon renewal, and the ratings have not been as strong this past year for the series thanks to the NBC revelation that The Big Bang Theory is too strong of a contender.

As for the newcomers, Do No Harm will see Steven Pasquale in a Jekyll and Hyde-like medical drama that has the actor playing ”a brilliant neurosurgeon wrestling with his dangerous alter-ego that threatens to wreak havoc on his personal and professional life”. The pilot has been gaining some great buzz, and perhaps this could be a great companion to NBC’s already renewed hit with a twist of its own Grimm. While it’s penned by David Schulner, who worked on NBC’s failed series The Event, the show has some additional star power as The Cosby Show’s Phylicia Rashad in her return to the network.

Joining that drama is Infamous, which used to be titledNotorious, starring Meagan Good and Victor Garber. An all-new crime drama, the series is said to be ”an opulent soap in which a female detective (Good) returns undercover to the wealthy family in which she grew up — as the maid’s daughter — to solve the slaying of the notorious heiress who was once her closest friend.” There’s said to be plenty of comparisons to ABC’s own soapy drama Revenge, but NBC could possibly replicate the same formula here as well. Liz Heldens of Friday Night Lights wrote the pilot, and will executive produce the series as well.

Those two dramas join previously ordered genre partners Revolution, from J.J. Abrams and Supernatural‘s Eric Kripke, andChicago Fire, which sees Taylor Kinney and Jesse Spencer back on television in regular roles.