A patch release refers to a small update or fix for a software or application to correct issues or bugs. It is a quick release that focuses on specific problems rather than introducing major changes or new features. Full definition
There was a day - one patch released for the game and it's possible something in that update was intended to address the load time issue. (kotaku.com)
These enhancements will also be made available to owners of the 360 version of the game via a free patch released at or near the PC version's release date. (zeboyd.com)
Although a few song files that hinted at the release of Street Fighter's Ryu and Fire Emblem's Marth as Smash Bros. for Wii U and 3DS DLC was datamined months ago, the most recent patch released today in Japan all but confirms them. (nintendocastle.com)