The statement is a bit vague, I think the timing is peculiar too, with the death of Steve Wright and the rumblings and criticism of how badly he, Bruce, O'Grady were treated.
Jordan North is also popular and successful - his show was competent. So he's either done something and got sacked, or he's leaving for pastures new. I cant just see it as them moving him on to Radio 2 or something.
Radio 1 is in danger of being seen as a posh boys\girls club with the addition of Laing - you already have Greg James wanging on about cricket half the time and Matt and Molly Jolly Hockeysticks larrrfing together on the weekend.