Previously, I have mentioned that there was a subtle metagame shift in TvP opening in November-December 2014, whereby Terran opt for tech before additional Barracks early on. It has become the norm in the current metagame. This post discusses the most standard Widow Mine drop opening in TvP.
INnoVation was destroying every Zerg in 2013 with Command Centre first into an early third, but it has gone out of style in recent months. Taeja has added his own flavor in this classic TvZ build.