Sort of. Reaper and Stalker nerfs, which seem reasonable, especially considering their apparently statistically-backed dominance, and a buff to a few Zerg buildings and Roaches. If the Zerg were really getting their asses handed to them on such a regular basis, it'll be interesting to see how this tips the balance.
"The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts." -- Bertrand Russell (I think...)