I think the sentiment was that the 5th of Feb was mentioned by quite a few of the 'insiders'. You're right things change, but it's not good for said insiders other information. If they had inside information of the reveal being on the 5th then surely their sources would've told them of the change as well and they'd have passed it on. Saying 'I know I previously said that the reveal was on the 5th but my sources are now saying that's changed and the new date is the 30th' would've corroborated their sources. As far as I know none of them did that so their info is looking more and more like the BS I suspected it was.There is even games which are planned to appear in E3 disappeared from conference less than one person month before.
Currently they can't do something in February without giving an invitation to the press before end of next week but this is a new marketing team and maybe a they want to do things differently than in 2013 and go their own way this is just my personal opinion. Maybe today or before end of next week they will announce something.
There seem to be two camps developing here. Those who believe the cold, hard data of the github leak and those that prefer to believe so called 'insiders'. Personally I'll take the data, while accepting that it doesn't tell the whole story due to the lack of context for the tests.