Well, that link points to the docket for my court and judge (S.D.N.Y., Martin Glenn). But as far as why they renamed the company, I'm not completely clear, though
this link might provide a clue. Sounds like GPH is a separate entity spun-off of the SGI now owned by Rackable. I don't think this suggests any significant developments are afoot, it seems to be just some necessary corporate/bankruptcy shuffling. GPH is apparently a "debtor-in-possession" company, which means that they retain some assets (hence the "holdings" in their name) with which they probably intend to generate revenues to reimburse creditors. Nothing to get too excited about - any brilliant and innovative employees have long ago departed the company for greener pastures.
Google probably has far more info on this, I just don't have time to dig for it right now.