Two months is "months," and the game was always intended to be a trilogy, written as a trilogy, etc.
I know it's still early, I'm just curious if anyone's stumbled upon info regarding the production of the second part. Work on MGS2 began one week after the US release of MGS1, and may games' sequels begin production that quickly, especially when there's a full series in mind.
The ending of the game implies sequel, but there's a world of difference between "implies" and the promise of a sequel (let alone a trilogy). As for the time frame.... perhaps the developers are waiting to see how the game sells before they set to work on the next part. After all, if the first part bombs (and $15 is a lot of money for a PSN game, near as I can tell), there's little point in devoting the resources to a second part that would cost them even more money.
True enough, but if the sales on part one tank, there's no guarantee of a part two. They likely do have a part two (or even three) planned, but if they don't make enough money to both pay for part one AND finance part two, ther will be no sequels. That's why it's too early to tell if there will indeed be more, they'll have to sell so many games in a certain number of months (6 maybe?) before they can go ahead with any certainty.