After the undertakings are negotiated and the deal has been approved, in a lot of cases, particularly high-profile cases, there will be the issuance of a press release that will contain a high-level summary of the undertakings. The question is, what level of detail do you provide? You can't provide so much detail that you'll actually put competitively sensitive information out in the public arena, so you have to be careful about that.
On March 24th, 2011. See this statement in context.