UPDATE: WWE is adding classic Raw & Smackdown episodes to the WWE Network this week due to it being "Raw Attitude" week on the Network. Classic episodes are mostly from 1998 & 1999. Episodes include "Austin vs McMahon" for the first time, Austin's "hospital visit" to Mr McMahon (birth of Mr Socko), DX invading WCW, the "Stone Cold Beer Truck" episode, Chris Jericho's debut and Steve Austin's first appearance as the WWE champion.

They've already started appearing on the WWE Network through links found by searching, but WWE will be adding WCW Nitro episodes onto the Network throughout the weekend to be ready for Monday. 

Earlier today, links were being posted on Twitter relating to different episodes of WCW Nitro from 1995-1996 but have since being taken down or at least unavailable for viewers to watch. It was reported earlier this week that new WCW content would be added and WWE have done exactly that. This will be the start of the main core content that users have asked for relating to the "Attitude Era" and the "Monday Night Wars".