So I spent some time taking a look at the first 1771 games played this season. For anyone interested, here are the results:

Games won:
PvT   364   66.91%
TvP   180   33.09%
PvZ   360   64.17%
ZvP   201   35.83%
TvZ   244   57.41%
ZvT   181   42.59%

PvP   201
TvT   23
ZvZ   17








Some conclusions that I think can be drawn here:

• RvR into a mirror matchup is SUPER rare.  In the case of PvP I would postulate that the 201 PvP games played were from PvR or PvP games. No idea what percent of games start as PvR and end up PvP.
• Protoss is heavily favored in all matchups (obv)
• TvZ is T favored, but not by a huge amount

Note that this sample is heavily biased by individual players. A player with over 100 games would account for almost 6% of the total games.

2v2

First 300 games of the 2v2 ladder:

PTvPZ   72   68.57%
PZvPT   33   31.43%
PPvPZ   57   75.00%
PZvPP   19   25.33%
PPvPT   56   63.64%
PTvPP   32   36.36%
PTvTZ   2   Omitted
TZvPT   1   Omitted
TZvPZ   1   Omitted
PZvTZ   1   Omitted
TZvPP   1   Omitted

PPvPP   16
PTvPT   6
PZvPZ   3

Conclusions:

• PP matchups heavily favor the PP team
• Zerg is kinda bad in 2's