Will Grand Theft Auto IV be the biggest video game software launch of this year? It’s almost a certainty. Wedbush Morgan Securities analyst Michael Pachter expects 6 million copies of the title to ship throughout this week, with several other industry analysts forecasting an upwards in sales of $400 million.

Take-Two CEO Ben Feder, however, expects sales of GTA IV to fully surpass the already high expectations.

Our expectations are very high, higher than analysts give the game credit for. All the analysts had a (sales) number, give or take, and I think we will be on the upside of that rather than the downside.

With all the mainstream attention that the title is receiving, I’d say it’s quite probable that they will exceed the sales targets set by analysts. We’ll know for sure once the official sales figures hit next month.

Take-Two CEO bullish on ‘Grand Theft Auto 4′ sales [Reuters]

Follow this author on Twitter.

Read more: GTA IV Makes Guinness World Records,  April NPD: GTA IV Breaks Records, Nintendo Leads Hardware Sales,  Take-Two: GTA IV Ships 11 Million, Sales Hit 8.5 Mil Units,  May NPD: Nintendo Leads Hardware Sales, PS3 Edges Past 360,  Take-Two: Grand Theft Auto IV Shifts 10 Million Units, 360 DLC Due In Fiscal 2009