The voices in my head say that WotC will announce in a few months that all of the 3.5 PHB classes will be in the first 4e PHB. Yes, it's pure speculation, but hear me out. If I remember correctly (can't find the post), the Races and Classes spoiler said that the monk was a martial striker and still being developed. That's martial striker, not ki or psi.
Second, they're going to have to convert a lot of minis to 4e. Again, memory fails me (and the voices are silent), but I'm fairly sure there were a few of the second string classes being converted before 4e hits the shelves. I know there are some in the Top 20 from each set (githzeri monk from Underdark and young master from GoL come to mind), but those don't get converted until July.
I'd guess that the appearance of 4e so soon after 3.5, without the full array of classes from the 3.5 PHB, would cost WotC more than a few $$ in sales. They may make up for it the following year with the PHB2, but that's a gamble.
So is all of this a reasonable assumption?
Second, they're going to have to convert a lot of minis to 4e. Again, memory fails me (and the voices are silent), but I'm fairly sure there were a few of the second string classes being converted before 4e hits the shelves. I know there are some in the Top 20 from each set (githzeri monk from Underdark and young master from GoL come to mind), but those don't get converted until July.
I'd guess that the appearance of 4e so soon after 3.5, without the full array of classes from the 3.5 PHB, would cost WotC more than a few $$ in sales. They may make up for it the following year with the PHB2, but that's a gamble.
So is all of this a reasonable assumption?