I've been trying to pin-down the UK rollout schedule for the F30 and this new iDrive system. Both my dealer and BMW UK Customer Services tell me that there have been no BMW Product Bulletins confirming a release date for the new system into the F30.
This thread states the new system will go into F30s from November production, but I've been unable to corroborate this info for the UK. My current build date is week 41 (beginning of October), so if I can confirm the rollout date for the is definitely from November production then I'd happily delay my order by a few weeks. On the other hand, if there's no rollout date currently published, and no sight of one, then I'd rather just go ahead and get my car ASAP.