I just did custom orders for the Air, the MacBook, and the MacBook Pro and all 3 have arrival dates of march 14th. Usually these custom build dates will slip much further back (3 weeks or more) when something is imminent or on the way.
So nothing this month then, interesting I wonder if all these Mac’s will be updated at WWDC instead and there is no March event instead a few things will be updated and a press announcement made (much like last year). iPad Pro with Face ID is also rumoured to be announced at WWDC so it’s sure sounding a lot like last years WWDC.