Cool! Then you can keep using those sources, and those of us hoping for a 4e style modern can get it from WoTC.
Yes... and with the GSL in place you get to skip over nice things like...
- The entire Blood & * series (I don't think the publishers will change over unless there is a major amount of backing considering the current Modern20 support would probably be questionable due to restrictions)
- Waiting for WotC to put out a book every epoch for materials... then producing things like d20 Past: Redux.
- The crossover appeal of such a wondrous setting like Urban Arcana...
To be honest, cosmologically PoL works a bit better with an image of Modern fantasy than Urban Arcana. The Shadowfell and Feywild, with a little adjustment (having better names/more 'in world' names for Modern) make them close enough to a lot of Modern homebrew (my own included) that I wouldn't object.
However, the WotC-published d20 Modern is probably the purest form of WotC-style d20 to come by my eyes. Yes, it has quirks, and yes, it can be a system which is just too... limiting to people, but honestly? I don't find it too limiting that a game which had so little 1st party support received some really great 2nd (Game Mechanics) & 3rd party (forum support from some pretty solid thinkers like RangerWickett and his Elements of Magic: Mythic Earth alongside others). I've run games from the Dark Ages to the Weird West to the Far Future, each with their own style and flair which is aided by the lack of class-binding inherent in a D&D (3.X or 4e).
A lot of the very complaints that a lot of the 4e fans have are resolved in Modern; yes, there are some great skills or talents in each class, but you don't have whiny players complaining "oh, my character who wants to be harder to damage isn't Tough!". The generic nature of the system and the sandbox implied by a lack of real 1st party settings (besides the horror show which was Urban Arcana) make it amazing.
I really would love to see WotC use 4e as a superheroic take on Modern; using it in a M&M-killer system would be amazing. However, it really isn't in the style which most of the those who enjoy Modern enjoy. There are of course those who embrace 4e in the Modern community; however, there are also those who are weary of exactly what Wizards will do with a refitting of the system considering the track record of the books previously presented.
Slainte,
-Loonook.