On the UK Apple site (via The Telegraph), all four colours of iPhone 6S Plus are listed as being dispatched in three to four weeks. The handset is supposed to go on sale on September 25 (a week on Friday), so that’s a delay of one to two weeks.
The Rose Gold is a new colour for Apple. It’s thought to be its attempt to appeal to the Chinese market, which it only entered in October last year.
Last year, the iPhone 6 Plus also sold out during the pre-order weekend. And in 2013, the then-new gold iPhone 5S sold out first, with buyers having to wait weeks.
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Both handsets feature an always-on Siri, and a new 3D Touch interface. This works similarly to Force Touch on the Apple Watch and MacBook, but can differentiate between three levels of pressure (instead of two): normal press, peek and pop. Peek involves gently holding your finger on the screen to preview an email, say. Want to go into the email itself? Just press a little harder to pop into it.