Wedbush Morgan, a US-based financial services company, is predicting Grand Theft Auto IV will ship six million units, and sell nine million within the first week of release.

The analyst predicts the game will be responsible for around USD 450 million of Take-Two's expected USD USD 1.073 billion publishing revenue this year, generating USD 135 million of the company's operating profit.

Wedbush's Michael Pachter, however, remains unimpressed. "As we look at Take-Two's line-up, we see GTA IV, and several games that look much like Take-Two games from past years," commented Pachter.

"We are fans of Midnight Club, but question the decision to delay the game's launch into the competitive Burnout and Need for Speed window as ill-advised. We also note that the Q4 2008 launch of Midnight Club will mark three and-a-half years between versions of the game, highlighting Take-Two’s failure to "sequelise" its key franchises on a regular basis."

Pachter's comments are unlikely to affect the sheer coolness of GTA IV however, so if you want a copy you'd be best to get your order in as soon as you can.