Hi
I felt the same when moving from my iPhone 5s to the iPhone 6 Pus but not long after I adjusted to the difference in size and wouldn't be keen to go back.
Their are lots of chatter on the device and its expected specs and release date which was pegged at March !
I'd suggest to keep watching the Vodaphone Site
http://m.vodafone.co.uk/mobile/index.htm?cid=ppc-mec-auto/uvzq/lznty/qrnuoHope it's available soon for you.
😎
Current Phone >
Samsung Galaxy s²³ Ultra 512gb Phantom Black.