They said on the radio today that they may change the single choice to "Crash and Burn" instead of Wear My Kiss.
It's a brand new Babes track that they recorded recently (yesterday I think). Built ground up, presumably, FOR Sugababes 4.0, so it's not just Jade pasted over Keisha's bits.
And I think they opted to use a producer closer to home (i.e. no RedOne), thank goodness.
I'm assuming that Crash and Burn will be on the UK edition, and not the continental European edition of Sweet 7.
Also, C&B sounds like it ISN'T particularly selling Suga sex...am I reading the title correctly? Certainly doesn't sound like "Make It The Best (Sweet & Amazing)" or "Give It To Me Now"
The Sugababes are also releasing (a live version of, IIRC) "Santa Baby" as a promo Xmas single sometime in December.