Virgin Media: Some channels may only launch in NGTV areas from April 1st

Virgin Media has posted the following on their web site:

When will I get the new channels?
We’ll be launching Discovery HD, Eurosport HD, E4 HD and SyFy HD on 1st April. Not everyone will get access to these new channels straight away as we are carrying out some technical upgrades to our platform and there’ll be a few areas where we’ll be staggering the rollout. But don’t worry – we’ll be rolling them out as quickly as we can, and we should be all done by the beginning of June.